That's why I always recommend to every trader to keep a note to himself and record his trade anytime, I know it's hard and it sucks but that's the only way to learn in Forex, you have to be willing to keep a journal and record your trades.
Basic things that should be on you notes should be.
Why you enter the trade.
Time
Date
And your expected profit and loss from each trade.
And after a trading day you can go through them and then learn about your trading habits and then tweak it from there.
But if you just hop on your charts and just take trades base on seeing an opportunity you wouldn't be able to learn much.
A journal note can be diary, exercise book or whatever you can get, this is the only way as far as I can think that would be able let a trader learn from his trede and make a progressive improvement.
As a trader, you are at an advantage with a journal because when you go pro, it will help you to analyze your thought ad how you generally approach trading.
Traders, get a journal and document your trades, it will save you a lot of time.