I just do a simple investment strategy, buy cheap coins with lots of numbers, after that hold for a long time. After getting the high price, then sell.
I am also doing this strategy. But sometimes it's hard to predict the future of the project.
How do we know if that project will last long? I think that would be a difficult answer for us.
Everyone will do that, buy cheap and sell expensive, but we never know with the future so that when we feel getting a profit then immediately selling some is a good thing and we must immediately do.