We all hit roadblocks that force us to stop and re-evaluate.

From family and personal issues to career and business conflicts, we are all challenged to define who we are and what we are doing every single day- sometimes more. In the countless moments when life has pushed back, these are 21 of the many quotes that have inspired me to pick myself up, dust myself off, and press on. I hope you find inspiration in them as I have.

21. “People with goals succeed because they know where they’re going.” — Earl Nightingale

20. “If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.” -Henry David Thoreau

19. “When defeat comes, accept it as a signal that your plans are not sound, rebuild those plans, and set sail once more toward your coveted goal.” — Napoleon Hill

18. ‘The only thing standing between you and your goal is the bullshit story you keep telling yourself as to why you can’t achieve it.” — Jordan Belfort

17. “I don’t care how much power, brilliance or energy you have, if you don’t harness it and focus it on a specific target, and hold it there you’re never going to accomplish as much as your ability warrants.” — Zig Ziglar

16. “If you’re bored with life — you don’t get up every morning with a burning desire to do things — you don’t have enough goals.” — Lou Holtz

15. “Do not wait; the time will never be ‘just right.’ Start where you stand, and work with whatever tools you may have at your command, and better tools will be found as you go along.”— Napoleon Hill

14. “Obstacles can’t stop you. Problems can’t stop you. Most of all, other people can’t stop you. Only you can stop you.” — Jeffrey Gitomer

13. “You can conquer almost any fear if you will make up your mind to do so. For remember, fear doesn’t exist anywhere except in the mind.” — Dale Carnegie

12. “By recording your dreams and goals on paper, you set in motion the process of becoming the person you most want to be. Put your future in good hands — your own.” — Mark Victor Hansen

11. “If you want to be happy, set a goal that commands your thoughts, liberates your energy and inspires your hopes.” — Andrew Carnegie

10. “Success is the progressive realization of a worthy goal or ideal.” — Earl Nightingale

9. “It doesn’t matter where you are coming from. All that matters is where you are going.” — Brian Tracy

8. “Decide whether or not the goal is worth the risks involved. If it is, stop worrying.” — Amelia Earhart

7. “Discipline is the bridge between goals and accomplishment.” — Jim Rohn

6. “Begin with the end in mind.” — Stephen Covey

5. “Don’t let the opinions of the average man sway you. Dream, and he thinks you’re crazy. Succeed, and he thinks you’re lucky. Acquire wealth, and he thinks you’re greedy. Pay no attention. He simply doesn’t understand.” — Robert G Allen

4. “You miss 100 percent of the shots you don’t take.” — Wayne Gretsky

3. “Believe you can and you’re halfway there.” — Theodore Roosevelt

2. “When you know what you want and you want it bad enough, you’ll find a way to get it.” — Jim Rohn

1. “Do not let what you cannot do interfere with what you can do.” — John Wooden