Everyone experiences setbacks. However, those who achieve the most, experience the most setbacks because they persist as long as it takes to reach each goal.
Does it ever seem that you are blocked in every direction? That's the time you need to get creative, become more flexible, and open yourself to the possibilities that are most certainly there. You would miss those opportunities if you ceased to persist in your efforts.
Sometimes when you get stuck in a rut, the rut can suddenly and unexpectedly run out. What a great opportunity that can be for you to climb out of that rut, look around, and see all the valuable things you've been missing.
Never quit! Use each setback, each disappointment and each success as motivation to push on ahead with more determination than ever before.
Never quit, and you will create more opportunities for success and satisfaction which will lead to the life you choose. Failures are but stepping-stones on the road to success. Believe it because it is so.