Being an entrepreneur is all about making a mark, doing new things and trying to be different from the rest of the crowd.
It is also about having fun. If you are not having fun, it is better to not be an entrepreneur. Entrepreneurs cannot take the life seriously. There are so many hurdles to cross that it is simple not a good idea to worry about things. Of course one could argue that worry is part of the entrepreneurship.
I say that worry serves nothing other than getting you more of it. It is because worry does not allow you to think of anything productive. It keeps one in the thoughtful mode while he/ she should be in the working mode. Worry takes the funny side out of someone and makes him a serious man five years older than your age. Worry causes hair loss and wrinkles.
How to stop worrying? Catch that thought. Be more aware of yourself. Soon you will be able to spot the thought of worry. Once you get that , laugh it off and laugh at yourself. Keep doing it often and see your energy levels climbing to the top.