These are indeed three very good rules. Discipline I believe is one of the most important ones. I have been trading pretty much against the market during the last month.

I investigated that I developed a kind o instinct for the charts, patterns and specific formations. The more you trade, these start to get visible once you quickly look at a chart.

Discipline to control FOMO is harder though, also trading, just to trade is bad, too. The worst deals I made were those where I tried to jump on a high speed train even knowing that the chart just moved into a Bull-Trap.

I now try to only trade with a clear head, but that is also training. As many things you need to train discipline with each and every trade.