Which of those assets has given you the best return so far?
It's Dash, i start with it when it called DRk, under 5-6 usd i think
But i regretted to sold some during a small pump

Sell high and buy low is very hard, if you trust in a coin keep them !!!
It's best to only sell a part of your holdings so that you still have some coins in case the price goes up.