If you want to hold on for a long time, then I suggest you invest in several ICO projects, so long-term holding could have a surprising return. I recommend you to join these ICO.
wepower
Experty. IO
RSK
TraDove
Careful about giving out financial advice like that. Its not logically sound. Invest in ICOs because they could have a high return? Why not advise going all-in on #30 on a roulette wheel? BY that logic that seems fine. The flaw is that you need to consider risk. Without risk these models suck.