Always remember that profit and loss come from the same source.

You made a fortune on contracts—if you don’t set a stop-loss, and by luck you survive the single-sided pressure and win, there will definitely be another time; you’ll have to give back everything, principal plus interest.
It’s just like how, in the last bull market, I made huge gains on altcoins with long-term positions—yet this bull market turned from making money into getting trapped and ending in losses.
If I hadn’t learned on-chain analysis early, I would have suffered a miserable defeat.
Path dependence is always the road you must take in investing the way it should be.
There is no eternal right; long-term learning is the most important thing.