I don’t think you should spend much time being unhappy about the bad breaks. You get a lot of them, but you also get a lot of good ones. The thing to do is just to maximize your odds of using the good ones and minimizing the effects of the bad ones.
The key to successful investing is to have a clear understanding of the market, the risks involved, a disciplined approach, a long-term perspective, a strong understanding of the fundamentals, and a clear understanding of the risks and rewards.