Hodl is good if you holding the right coin.
let's look at 1 year performance of major coins as of now.
all values are in USD basis.
Bitcoin : %84 increase
Litecoin : %26 increase
Bitcoin Cash : %23 increase
Neo : % 6 increase
Monero : %14 decrease
Ethereum : %14 decrease
Ethereum Classic : %17 decrease
Ripple : %49 decrease
Zcash : %55 decrease
Hodl is good but choose wisely what will you hold for long term in 2020.