Before I may proceed, I would like to make this view clear that sometimes, something done by someone and have it made a mistake can be repeated by others and they will succeed.
The only acknowledgement change should be the time frame to do it just as our investment and trading plans goes such as entry and exit time frame.
Like some unsuccessful traders will say... Trading is gambling or a waste of time because you either rely on luck to make it or you lost it all out of bad luck. Meanwhile, it was their fault of not realizing that they were supposed to had ascertained s high level of knowledge before getting on it regarding it requires logics.
Being afraid of doing mistakes is another mistake
I made
I would go contrary to this this. Preferably...be afraid/conscious of making mistakes but when you get it wrong, don't be afraid to try again with different strategy that is feasible to bring you better results and when it fails you, don't feel exhausted to try again.
The fact is that the more you try and retrying is the more you approaches to the point of getting it right and "never give up" is the key to get it right if really getting it right is made a prior.