A mistake is a gift, not a threat. Instead of being disappointed because we once fail but use this as a tool to improve and develop our skills.

Actually, we can't be perfect no matter how good we are, even though some called as an expert. It is a common thing to happen and we don't need to worried about it. Having them corrected and will be fine. It is just a need of time to figure out where we are wrong, where we are less effective, and what strategy is not helping. And by taking an action, we solve the problem and that leads us to a better trading result.