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
Special thanks to you. I will research it. Before this time, i play ICO but i lost a little money. I dont believe in ICO until this time.
I know Bitcoin in 2017. I play too in ICO and lose my money because the ICO is scam. I suggest to you if you want to invest your money with a long term investment you can do a little research in 100 altcoin on marketcap.
ICO is not a scam, ICO has its practical value and application, I don't think the ICO is a fraud, as long as you choose a good ICO project, so you can get good returns, if you want to hold for a long time, so investment ICO is a good choice.
use Altcoin for the long term will be very capable to generate more profit.
and now this I highly recommend Ethereum as Altcoin which is very suitable for the long term.