Don't hold some good but random altcoins for a long time. If you still want to hold then don't leave their telegram group or other social accounts, check updates on a regular basis. Because if you just hold and keep it in a wallet for 2 years then who knows after 2 years your coin's value may turn into zero value, because of the swap!
this is the problem if you are buying New coins things that suicide to do if you Hold since we already saw almost all of them that after pumping when reaching the exchange then days or months after and the coins are dying so stop doing stupid things but Buy those currencies that proven their capacity to stay longer.
I lost many coins because of swap things! Recently Insolar is swapping their token, I did not know about it, because I have been holding for two years but did not care enough as the price was very low! Today I was checking the Coinmarketap android app and saw Insolar coin increased by 530% but their ticker is XNS when I knew it was INS! So, I joined their telegram and get the updates about the swap! Unfortunately, If I fail to swap on time then all of the value of my holding coins will be zero! So, except Bitcoin, Ethereum, don't trust any coin for just buy and hold for a long time, rather keep updating yourself!
Swapping is really bad i think because i also have some coins in the past that now gone because of this swapping since i have no idea in the past about that king of developers movement.