Learning Trade Forex

I got hit so hard with emotions today. I had so great trade that I held deep in profit and it reversed on me 2 pips above my target which would be my +20 full size daily limit. I was lost at that moment, couldn't do anything but wait. I felt entitled to those profits and couldn't trade well any more. Reversal was quick and I tried to end all with another trade and quick test towards low. I didn't get it, I lost on both trades 20 full size pips. Later I was just lucky in my attempts to get me in black.
I guess that trading isn't about rules or knowledge, from one point it's just how much emotionally mature you are. Maybe money heightens all, because I don't think that I'm so immature, but maybe I am. First two trades were half size, others full size.
In the end +6 full size pips