ANALYZE TRENDS AND CHARTS If you are trying to day trade, you will have to learn how to time it out. You need to have extreme discipline as well. It's very easy to be excited about a coin, thinking it will keep rising. If a coin has dipped, that is typically the time to buy in.
Tell yourself you will sell at X%, and stay true to that. Remember my  purchase I made that gave me 10x return? Well, I didn't cash out at that point and kept thinking it would rise -- a common beginner's mistake. I didn't do my research to even have a valid reason to keep holding and I also didn't realize how astronomical that return was. I didn't understand the discipline in investing at the time, but that was definitely a lesson learned. I do believe in holding for a few years if you are not big on day trading, even if you can make profits from swing trading. There are absolute exceptions, especially when you are willing to take a risk because you just fully believe in a coin's future. Sometimes it's better to keep your hands off for a long time because if you don't know what you are doing then you could lose a lot of money.