There is nothing in life to hold back and repent on past failures, its just the resilience to move ahead , take up the cudgel to against big challenges, resolve issues, and derive satisfaction out of it what makes human life more meaningful. The problem with human beings in that then tend to entangle themselves with too much thinking with too little action plan, either resulting no progress or possibly a deterioration. It takes a while for them to redeem themselves to get back to the act of being positive, and remain in that state of mind.