Holding is the only way for altcoin investors now unless you want to accept your losses and exit but its better to have patience, i have seen coins that worth 1,500$ a year ago and they are now 200$ , i have sold airdrop tokens that should worth 150$ for 10$ to sustain but i am not stupid enough to get rid of all my tokens and coins because market is not in my favour, be wise and remember that those tokens you are getting dispose off can turn something when market start turning for the better, be determined to win,when thinking forward always think backward as well.
The decision to hold is not always beneficial. You have to make sure the coins you hold are indeed potential and will not turn into junk coins. Because not all good coins are held for long periods of time.
Keep on watching and get the latest news about the coins you hold. Because of my previous experience I hold StQ coins because if I sell I lose so I choose to hold but it turns out the longer I hold the price goes down and now the coin is actually a junk coin and has been abandoned by the developer.
If you want to hold. Bitcoin and ethereum coins are good for long-term hold.