uhmm being discipline, not being ignorant, and having a lot of patience. These things really help me a lot in handling my trades. Besides creating your own strategies and TA would be much important among them all.
Honestly, I am not a day trader, I am a person more kind of into long trade so the tip is to "buy low, sell high" and as much as possible HOLD. If you are kinda like me then I think that would work to you as well. If happens you are into a short-term trade maybe monitoring the chart, making a TA out of it would be probably enough.