stop what? you weren't actually trading before, you were gambling.
you should now start trading instead.
there are certain simple strategies to follow or keep in mind:
1- never buy into the pump:
when price of an altcoin has gone up too much too fast, that should be a red flag for you not to buy it anymore. but if you decided to buy, keep an open eye, keep rule #2 in mind, and sell fast with the rise to make profit and get out quick
2- stop loss is your friend:
you can do this with some automation like using the feature the exchanges offer you or use a bot. or even do it manually. it means have a negative percentage in mind that you sell no matter what. in altcoins it can be -5 to -10% drop and you dump and get out. i usually do it at -1% and my profit targets are usually 5% to 15% that means safe profit and always successful trading.
3- never fall for a hype in altcoins:
know that altcoins are mostly pump and dump and for that people will hype them up with lies. and the bigger the altcoin the bigger and more spread the lies. so just get your profit and get out fast. and only invest in bitcoin for long term.
This is true although im new in trading but im patiently observing paths and statistics. Don't treat trade as gambling always use strategy and always disregard emotions.