As experienced the system or the process of trading, one has to work on him/her self the "mind aspect" of any aspiring individual (in trading) to make a good successful trade.
And what are these mind effect or aspects?
I think they are the ones trader's "mind/thinking" during the trading scenario.
Like the trader's emotion - one has to learn to wait and find the right approach in putting a trade. This is hard, but that is trading is all about. Waiting for the right timing and spotting the right location that has a potential to make a gain.
It takes time to psyche oneself in trading, but the desire to make a good trade should be there always. It cannot be done in days or months, and possibly in years.
But I think and I'm sure it can be done!
It's just a matter of "keep" trying.