Make a plan and follow rules you set without breaking them.
Only invest in things you understand and believe in.
Always do your own research and think carefully.
Think about how much you could gain compared to what you could lose.
Try meditation and mindfulness to stay calm.
Only invest money you can afford to lose.
Keep a journal of your trades and feelings, so you can learn from them.
Take breaks when needed.
Find other good things to do like reading, being outside, or spending time with loved ones.
Notice if your actions are causing stress and talk to someone you trust if you're having problems.
Hope this helps!
All these can be carefully taken into account if you have trading experience. Someone who was just introduced to bitcoin or crypto trading cannot understand all you have mentioned above, which is why the first foundation is learning about bitcoin and the crypto itself before thinking of trading.
It will be good for everyone who is just new to cryptocurrency to keep these aside and focus on having basic fundamental knowledge about the whole thing before going for any trading strategy.