Someone said – ‘Everything you want, is on the other side of the fear’.
No one has ever succeeded by staying in their comfort zone. It is paradoxical to think that being in comfort zone is happiness. Happiness and contentment is in achievement of what could be believed as not achievable. Moving out of the comfort zone needs to have a structure. It is easier to give up and move back into the comfort zone and therefore it is important to stay disciplined and follow logical steps.
Here is a link to an article written by Vijay Srinivaas C S R that I found useful. Read through and challenge yourself. Trust me, it is magical to try attempting that you thought is impossible. Of course, there will be setbacks and failures but these also teach so much.