To avoid whipsaw losses, stop trading. - Ed Seykota

I don't think traders can follow rules for very long unless they reflect their own trading style. Eventually, a breaking point is reached and the trader has to quit or change, or find a new set of rules he can follow. This seems to be part of the process of evolution and growth of a trader.

When a feeling dissolves, it ceases to be your enemy and begins to be one of your allies.

Systems don't need to be changed. The trick is for a trader to develop a system with which he is compatible.