Holding is the best choice actually in my opinion. The crypto market is still down, and selling nowadays with the actual rates isn't profitable at all.
Maybe you can sell the coins with low value or potential, but you should hold the most promising cryptocurrencies (like Bitcoin, Ethereum..) for selling later with higher prices.
Holding alternative coins even more riskier at this moment since only bitcoin is standing strong and comfortable at this moment so disregard that plan
Best to hold is bitcoin for the security and reliability purposes,this cryptocurrency is tried and tested to grow year after year so don’t doubt its capabilities
Ethereum is in dying position these days,dropping drastically and tooking over the position by ripple is one bad indication for the said coin