One of the longest-running shows in television history, TARDIS with their various companions, the Time Lord has encountered both the best and worst that people can offer.

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Avid fans of the show are infused with the same optimism the characters embody, but that is not the only takeaway audiences can learn from the Doctor. While there are countless hilarious bits of advice like "always bring a banana to a party," there are also many deep life lessons to glean while watching the cult classic series.

Every Life Matters

The poster for the Doctor Who Christmas Special A Christmas Carol

During the season 6 Christmas special, the Doctor said, "In 900 years of time and space, I've never met anyone who wasn't important." Throughout the entire show, he never makes a single person feel unimportant. The Doctor elevates the people around him, always encouraging them to make a difference, to make better choices, and to be better.

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Viewers can take heart knowing that they are important. History might not their name, but history isn't the same without each person living and making choices throughout their day. They can also this important fact when dealing with the world around them. If no one is unimportant, then every person they interact with should be treated that way.

A Monster Doesn't Always Look Like One

The Ood from Doctor Who Season 13

A running theme through Doctor Who is that a monster isn't defined by how it looks, but by how it acts. People and creatures that look terrifying can act the kindest, while attractive or seemingly normal-looking people do the most horrifying things.

The Ood, for example, while scary at first look, are a peaceful people, rarely even acting out in their defense. In season 1, episode 6, a harmless-looking man turns out to be a heartless collector torturing a Dalek to make it speak. The Doctor often approached new and different species with respectful awe instead of fear -- a powerful example that all viewers should take to heart.

The Bad Doesn't Erase The Good

The Eleventh Doctor, Amy Pond, and Vincent van Gogh sitting together

One of the most popular Doctor Who quotes is from Matt Smith's beloved regeneration of the Time Lord. After meeting the impressionist painter Vincent Van Gogh and discovering they were unable to change the dark ending to his life, his companion was distraught. But The Doctor reassures Amy Pond, saying, "The way I see it, life is a pile of good things and bad things. Good things don't always soften the bad things, but vice versa, the bad things don't always spoil the good things or make them unimportant."

Life can't always be good, but we don't have to let the bad erase the good. The ninth doctor demonstrates this beautifully in The Empty Child, celebrating that "just this once, everybody lives." He doesn't let previous calamities overshadow the beauty of the moment, ing the good is worth celebrating, despite what might happen in the future.

Sometimes The Greatest Gift To Give Is Confidence

Tenth Doctor and Donna sitting on building roof

David Tennant, the tenth and arguably one of the best incarnations of the Doctor, had a very special chemistry with his costar, Catherine Tate. Catherine played the brash but brilliant Donna Noble, a woman who started self-centered but grew to be kind and comionate during her travels with the Doctor. She never lost her spark, though, and was the perfect best friend for the Time Lord, making sure to occasionally knock him down a peg.

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Part of the reason Donna grew and changed so much is that the Doctor believed in her. He had confidence that she could be the best version of herself, trusting that their adventures would help Donna become everything she could be. Sometimes people just need a friend to believe that they can be better.

Your Decisions Matter

Donna surrounded by mirrors in Doctor Who

Every day we make little choices that seem to be entirely insignificant, but when they're all added up, they make up your whole life. Choosing to go left instead of right or deciding to speak up or stay silent can change the course of your existence without you even realizing it.

The tenth doctor explores this idea in the episode "Turn Left," asking what would happen if Donna never met the Doctor? An alien changes the timeline by altering the small decision of turning right or left on the street. The episode showed that even the smallest details can change our lives and the lives of the world around us.

Your Journey Matters Less Than The Person You Travel With

13th Doctor and companions Doctor Who

The Doctor once said that there are plenty of things needed to get across the universe, but "you know the thing you need most of all? You need a hand to hold." All of his adventures would mean so much less without his companions there to journey alongside the doctor.

Our lives are made up of the people we share them with. Life is nothing without other people. Every interaction and every relationship makes an impact, and the biggest impact is made by those walking alongside us on our adventures.

Don't Give Up

Rose Tyler from Doctor Who looking off camera.

Something the Doctor continues to teach fans is that there is always hope. He never gives up and he never stops. To him, every life saved is a victory, and every moment lived is worth it. Life is worth fighting for, we don't walk away from it just because things get hard.

Refusing to give up is a quality that drew the Doctor to his companions, like Rose Tyler, who had many great episodes in the series. One of her most well-known quotes is, "You don’t just give up. You don’t just let things happen. You make a stand! You say no! You have the guts to do what’s right, even when everyone else just runs away.” Even when separated from the Doctor by an entirely different dimension, Rose never gave up fighting for what she believed in.

Don't Push A Good Man Too Far

The main characters from the Doctor Who episode A Good Man Goes To War

"Demons run when a good man goes to war. Night will fall and drown the sun when a good man goes to war." This chilling warning about what happens when you push a good man too far is important to heed, even in real-life situations. The Doctor is a good man who tries to save every life he can, but when his dear friends are threatened, he calls in every favor owed to him and will tear the fabric of the universe to save them.

Even good men have limits, and those who love deeply will go to impossible lengths to protect the ones they care for. The same principle applies to those who don't usually get angry. If they have been pushed hard enough to become enraged, there is never a good outcome.

Don't Forget To Laugh

The Tenth Doctor dressed as a Schoolmaster in the Doctor Who episode Human Nature

From the very beginning, a main staple of the show has been humor. From outlandish costumes and situational humor to accidentally quoting the Lion King, the show's writers have encouraged their viewers to suspend disbelief, relax, and laugh through every season.

Laughter is scientifically proven to be good for your health. It relieves stress, lowers blood pressure, and releases endorphins in the brain. Take a cue from the writers and their characters and to laugh. The Doctor and his friends always find time to relax and laugh, and so should we.

Try Talking First

The Twelfth Doctor looking serious in Doctor Who

No matter how things play out, if you want to settle a conflict, you eventually have to sit down and talk. The Doctor emphasizes trying to sit down and talk before all the pain or bloodshed begins. When the first shot is fired, you have no way of knowing who might be injured or what lives might be shattered as a result of those actions.

Even when a conflict isn't going to end in physical violence, try talking first. The Doctor says that in the end, "everybody does what they were always going to have to do from the very beginning: sit down and talk." So much heartache and pain can be avoided by deciding to address the issue before coming to blows.

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