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
I see Experty in conmarketcap is good for HODL, the reason is because the token that is available is only 79,404,564 EXY.
The lowest price is around 1200 Satsohi and now the price starts rising to 2400 Satoshi.
ref:
https://coinmarketcap.com/currencies/experty/