Late 2017 and early 2018 i was holding lots of coins and tokens from the ico's in that some i really trusted with solution and team (not only me most of crypto community trusted). Now this coins or token became nothing . But some projects i entered to sell for small margin profit these projects given profit . So holding token or coin for long term is meaningless.
The best season to let go of your ICO tokens was in January 2018 when all altcoins are surging, that was a very bad time to hold, you failed to understand how crypto works it is, most of those ICO projects are also looking for opportunities, they are not here to stay for ever, the same thing will happen with DeFi projects probably in 2021, after the bullrun is over many DeFi projects will die too