buying high is okay, as long as you don't sell.. it happens to all of us
the price will eventually increase in the long term, but if you sell early, you're making a loss.. so hold
But that is not trading, you are talking about holding, and that is a very different thing about what are you talking about.
Also, join ICO's and dont sell is a risky advice, you can not join every ico you see and deposit 10 thousand in each one expecting to have profits in the future. A lot of icos falls after they get listed because everybody sells their coins. So that is a horrible idea, i dont think the same as you.