You're more pressed to make profit as well, since it's a business. As for me, the thing that works best with trading is just waiting for the best opportunity and trade only at that time, by this strategy I rarely lose too much and frequently making profit.
But ultimately nobody can become master of trading, it's trial and error, you can lose and you can win, that's just how the game is.
If anyone thinks they can trade flawlessly without losing anything, good luck because that's just wishful thinking.
For the last 3 years, I changed my strategy and my attitude. I am patient, waiting for the right opportunity to buy and I'm very good at it but I still find it hard to find the right time to sell because sometimes the price falls without any major breaking news.
You have chosen the right path, I'm like you and I regularly make very good profits but when I was full-mode in trading, I was always under constant pressure and had huge losses along with huge profits. The only people who can be considered as masters of trading are those who are whales with connections and can manipulate the market with their actions.
You are right about the buying part, and when selling you should consider trailing stop loss. That means, if it has some small increase then keep holding, and then follow it up on how it goes down. If it goes down once, like for today it goes down, then it doesn't matter how much it goes down. You can be holding, and see it go down 20% today, and that still doesn't matter, because what it goes down in a single day doesn't make it go down too hard, and you can recover in a day if you lost it in a day.
What if we end up moving further with it? Then you just need to arrange it in a way where if it goes down more than one day, that would be the better way to move forward. If it goes down today then goes down tomorrow and then go down one more day etc, that would be selling it.