If something really makes sense or if it's just what everybody else is doing and its hard to think that way, you can't think that way about everything it takes lots of effort but if you're trying to do something new it's the best way to think and that framework developed to figure out things so its really powerful method to succeed in life.
The fear is quite strong but if what you are doing is important then just override the fear, so this makes lots of confidence in you to succeed in life. the things drives anyone in that he/she want to able to think about the future & feel good about that so that, you should know what you are doing what we can to have the future be, be good as possible to be inspired by what is likely to happen and look forward to next day. more important things to try to figure out how do we sure make that things are great.
Nothing in life is worth while unless you take risks so do what you feel passionate about take chances don't be afraid to fail big to dream big but remember every failed experiment is one step closer to success. you should not quit, fall back always prepare yourself for next step. the best way figure out the things what you are doing you're life is become with lots of confidence in you. See yourself in front of mirror, get encouraged because taking risks is not just about going to job it also about knowing what you know and what you don't know, it's about being open to people and to ideas. the chances you take, the people you meet, the people you love, the faith that you have that what is going to define you never be discouraged, never hold back which lead to confidence in you life get succeed.