Just accept the defeat and forgive yourself, that’s the best way to move on from a serious mistake.

when I was younger, I experienced one of my worst losses in gambling, I was betting money I couldn’t afford to lose, and to make things worse, I was under the influence of alcohol.  All I had was aggression and zero clear thinking. In the end, I lost not only my own money, but also money that was entrusted to me. It was a hard lesson, but accepting what happened was the first step toward becoming more responsible.