The end game is to sell at whatever price you think is reasonable. Holding on "forever" can obviously cost you a TON of money, as we saw after 2017, when the whole market collapsed.
Right now is a good time to pick up cheap alts before they explode - I for instance is accumulating as much BLOCK as possible, since it's seem like a promising project with a ton of upside potential, considering they lauched the first DEX, and works on decentralized oracles.
There are tons of good projects out there, most importantly do your own research!