Here are 30 quotes that have the potential to inspire and bring about positive change in your life:

1. "The only way to do great work is to love what you do." - Steve Jobs
2. "The future belongs to those who believe in the beauty of their dreams." - Eleanor Roosevelt
3. "Success is not final, failure is not fatal: It is the courage to continue that counts." - Winston Churchill
4. "In the middle of difficulty lies opportunity." - Albert Einstein
5. "Your time is limited, don't waste it living someone else's life." - Steve Jobs
6. "The biggest adventure you can take is to live the life of your dreams." - Oprah Winfrey
7. "Believe you can, and you're halfway there." - Theodore Roosevelt
8. "The only person you should try to be better than is the person you were yesterday." - Unknown
9. "You miss 100% of the shots you don't take." - Wayne Gretzky
10. "The best way to predict the future is to create it." - Peter Drucker
11. "Happiness is not something ready-made. It comes from your own actions." - Dalai Lama
12. "Don't watch the clock; do what it does. Keep going." - Sam Levenson
13. "The only limit to our realization of tomorrow will be our doubts of today." - Franklin D. Roosevelt
14. "The harder you work for something, the greater you'll feel when you achieve it." - Unknown
15. "The secret of getting ahead is getting started." - Mark Twain
16. "If you want to achieve greatness, stop asking for permission." - Anonymous
17. "Life is 10% what happens to us and 90% how we react to it." - Charles R. Swindoll
18. "Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful." - Albert Schweitzer
19. "Challenges are what make life interesting, and overcoming them is what makes life meaningful." - Joshua J. Marine
20. "You are never too old to set another goal or to dream a new dream." - C.S. Lewis
21. "The only way to be truly satisfied is to do what you believe is great work." - Steve Jobs
22. "You become what you believe." - Oprah Winfrey
23. "The future depends on what you do today." - Mahatma Gandhi
24. "The only limit to our realization of tomorrow will be our doubts of today." - Franklin D. Roosevelt
25. "Don't count the days, make the days count." - Muhammad Ali
26. "The only journey is the journey within." - Rainer Maria Rilke
27. "Your life does not get better by chance; it gets better by change." - Jim Rohn
28. "You are never too old to set another goal or to dream a new dream." - Les Brown
29. "The best revenge is massive success." - Frank Sinatra
30. "The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well." - Ralph Waldo Emerson

Remember, quotes can be a source of inspiration, but it's up to you to take action and apply their wisdom to your own life.