Mondays might be rough, and so can the rest of the week. So sit down, take a deep breath, and check out these 15 quotes to live by:

"Breathe. Let go. And remind yourself that this very moment is the only one you know you have for sure." --Oprah Winfrey

"So go ahead. Fall down. The world looks different from the ground." --Oprah Winfrey

1 and 2. Oprah Gail Winfrey is a talk show host, philanthropist, media proprietor, and producer, as well as an actress. Winfrey is best known for The Oprah Winfrey Show, her talk show that won a multitude of awards and was the highest-rated programming of its type in history. It was syndicated on a nationwide basis from 1986 to 2011.

"I'm the one that has to die when it's time for me to die, so let me live my life the way I want to." --Jimi Hendrix

3. James "Jimi" Marshall Hendrix was an American singer, songwriter, and musician. Even though his mainstream career lasted only four years, he's widely seen as one of the most influential electric guitarists within popular music's history, as well as among the most celebrated musicians of the 20th century.

"Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that." --Martin Luther King Jr.

4. Martin Luther King Jr. was an activist, American pastor, African-American civil rights movement leader, and humanitarian. He's best known for his part in the advancement of civil rights, using nonviolent civil disobedience based upon his Christian values.

"Keep your head up." --Tupac Shakur

5. Tupac Amaru Shakur, additionally referred to by his stage names 2Pac and, for a short time, Makaveli, was an American actor and rapper. Shakur sold more than 75 million records around the world, making him one of the top-selling musical artists of all time.

"Love is like a virus; it can happen to anybody at any time." --Maya Angelou

"Do the best you can until you know better. Then when you know better, do better."  --Maya Angelou

6 and 7. Born Marguerite Annie Johnson, Maya Angelou was an American author, singer, actress, dancer, and poet. Angelou published seven autobiographies, three books of essays, and many books of poetry, and has been credited with a list of movies, plays, and TV shows that span more than five decades.

"I've never been afraid to fail." --Michael Jordan

8. Michael Jeffrey Jordan, additionally known as "MJ," is an entrepreneur, former American pro basketball player, and chairman and principal owner of the Charlotte Hornets. Jordan played 15 seasons in the NBA, for the Washington Wizards and the Chicago Bulls.

"I say luck is when an opportunity comes along and you're prepared for it." --Denzel Washington

9. Denzel Hayes Washington Jr. is an American film director, film producer, and actor. Washington has received a lot of critical acclaim for his movie work since the '90s, which includes portrayals of real-life characters such as Herman Boone, Frank Lucas, Melvin B. Tolson, Rubin "Hurricane" Carter, Malcolm X, and Steve Biko. Washington has been a featured actor in movies produced by Jerry Bruckheimer, and was a collaborator of Tony Scott's, the late director.

"Dreams become reality when we put our minds to it." --Queen Latifah

10. Dana Elaine Owens, also known by her stage name Queen Latifah, is an American songwriter, singer, actress, rapper, television producer, model, talk show host, comedienne, and record producer. Currently she is the host of her own talk show, The Queen Latifah Show.

"Be who you are and let everyone love that person." --Wiz Khalifa

11. Cameron Jibril Thomaz, also known by stage name Wiz Khalifa, is an American singer-songwriter and rapper. Khalifa released his first album in 2006, Show and Prove, and in 2007 signed with Warner Bros. Records.

"Choose people who lift you up." --Michelle Obama

12. Michelle LaVaughn Robinson Obama is a writer and American lawyer. She is the wife of the current and 44th U.S. President, Barack Obama, and the first African-American First Lady.

"Change will not come if we wait for some other person or some other time. We are the ones we've been waiting for. We are the change that we seek." --Barack Obama

13. Barack Hussein Obama II is the present and 44th U.S. President, and the first African-American to hold this office. Obama, born in Honolulu, is a Columbia University and Harvard Law School graduate, and served as Harvard Law Review president. A community organizer in Chicago prior to getting his law degree, he then worked as a civil rights lawyer, and taught constitutional law at the University of Chicago Law School from 1992 to 2004. Obama served three terms representing the 13th District in the Illinois Senate, from 1997 to 2004, and in 2000, he unsuccessfully ran for the U.S. House of Representatives.

"There are no regrets in life, just lessons." --Jennifer Aniston

14. Jennifer Joanna Aniston is an American businesswoman, filmmaker, and actress. Aniston gained recognition around the world for her portrayal of Rachel Green on the hit TV sitcom Friends (from 1994 to 2004), a part that earned Aniston a Screen Actors Guild award, a Golden Globe, and an Emmy.

"People, even more than things, have to be restored, renewed, revived, reclaimed, and redeemed. Never throw out anyone." --Audrey Hepburn

15. Audrey Kathleen Ruston, also known as Audrey Hepburn, was a humanitarian and British actress. Recognized as a fashion and film icon, she was active during the Golden Age of Hollywood. The American Film Institute named her the third-greatest female screen legend in the history of American theater, and she made the Best-Dressed List Hall of Fame.