This is easier said than done, because we never know when a particular project will become inactive. In the past, I had come across a few projects which suddenly became inactive, after a lot of hype and market activity. It is very difficult to differentiate such projects from the genuine ones. Personally I have invested in a few such projects and lost my money. One example that I could give is that of the TMT (Traxia Membership Token). That project was faring really well.. until one day it suddenly crashed at the market.