Everything you do is sourced by your world view which is contained in the subconscious mind. 

Every thing that has impressed you since you were a child, good or bad, has been imprinted and has decided how you will react to things that come your way. 

If you have resistance to aspects of growth or imposter syndrome or procrastinate, or feel fear when you consider a big challenge, it is the subconscious mind warning you. 

You can change every thing. You discover your limited thinking. You challenge it, then you reprogram, act, and celebrate. 

Fear falls by the wayside