I make strategies based on technical and fundamental analysis. If I found good and strong fundamental coin, I will hold it for maximum 1 year because that coin has potential to going up multiple times like 5-10x. And for knowledge of TA, I use it for swing trading by take profit between 20%-100% and try to compounding the profit. For holding I did not use stop loss but for swing trading I use stop loss and trailling stop.
It's very helpful when you're strategies are fully based on fundamental & technical analysis not just on you're instinct or someone's instinct. It will surely ended up losing when you cannot do your own research and didn't rely in analysis. You can look at someone's TA and FA but you must also do your own research to verify if it's legitimate. Fake news can trigger the market price down especially if the news might come from large social media sites. I'm a swing trader. I'm satisfied with the profit that I make everyweek.