It takes a lot of work to be ourselves, especially when we are faced with expectations, obligations, and social norms. Luckily, "being yourself" is indeed possible, and living authentically is more valuable now than ever.

"Be yourself."

You have heard these words before. You have seen them on motivational posters, heard them from friends, family, and teachers. Although it may sound difficult, traveling the road to being your true self can reap more emotional, mental, and potentially financial rewards than trying to be someone you're not.

And, in case you need a bit of help remembering, here are some words of wisdom about  being your true, authentic self -- spoken by some very successful people who took the words "be yourself" to heart.

1. "The beauty of my life is that from 32, 33 on...I figured out how to be myself completely on television. All these years I have made a fortune being myself." -- Oprah

2. "The strongest force in the universe is a human being living consistently with his identity." -- Tony Robbins

3. "I think of life itself now as a wonderful play that I've written for myself, and so my purpose is to have the utmost fun playing my part." -- Shirley MacLaine

4. "Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma - which is living with the results of other people's thinking. Don't let the noise of other's opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary." -- Steve Jobs

5. "Remember it's OK to be yourself." -- Richard Branson

6. "Never dull your shine for somebody else." -- Tyra Banks

7. "Always be yourself, express yourself, have faith in yourself, do not go out and look for a successful personality and duplicate it." -- Bruce Lee

8. "Your self-worth is determined by you. You don't have to depend on someone telling you who you are." -- Beyoncé

9. "You were born an original. Don't die a copy." -- John Mason

10. "One of the huge mistakes people make is that they try to force an interest on themselves. You don't choose your passions; your passions choose you." -- Jeff Bezos

11. "Find out who you are and do it on purpose." -- Dolly Parton

12. "To be one, to be united is a great thing. But to respect the right to be different is maybe even greater." -- Bono

13. "A girl should be two things: who and what she wants." -- Coco Chanel

14. "Don't compromise yourself - you're all you have." -- John Grisham

15. "Some people say you are going the wrong way, when it's simply a way of your own." -- Angelina Jolie

16. "Be who you were created to be, and you will set the world on fire." -- St. Catherine of Sienna

17. "Believe in your flyness, conquer your shyness." -- Kanye West