New here: My biggest lesson learned so far

Hey everyone, just joined. Been in the game for about five years now, mostly focusing on forex and indices. My biggest lesson, learned the hard way, was about moving stops. I had a decent short on $EURUSD open, looked good, then started to retrace. Instead of letting my original stop do its job, I moved it further out, then again, convincing myself it was just noise. Ended up taking a much larger loss than planned, completely eroding a week's worth of gains. Stick to your plan, or don't take the trade.