We all do it. We impose limitations on ourselves and our futures. We think of all these amazing things we would love to do or accomplish, and then the next thought is "but that will probably never happen". I decided long ago that the two words in the English language I would eliminate from my vocabulary were Never and Always. You don't know what opportunities will come your way, or how you are going to feel a year from now, so why limit your thinking? You can accomplish anything if your put your mind to it and be persistent.
Don't EVER limit yourself! Shoot for the stars and then go for it. Most people don't reach their goals because they aimed too high. They don't reach them because they aimed too low.
