FX trading is learning to drive a fast car, then waking up on an F1 grid. The car won't end you. Rushing through the corners (shifting SL, over risking, skipping rules) will. Patience and discipline are your gear sticks and brakes.
And we are only humans. That's why most fail.
Nothing is more distressing than a position with SL still at BE while price sits near TP. You're risking 1800 of open profit to chase the last 200.
Why risk more than you stand to gain?