I once very carefully studied a variety of investment strategies, even tried to engage in trading. But in the end I was convinced that long-term investment is still the safest and most profitable.
Holding is really worth because price is very volatile. You can keep holding when you want to gain good profit but make it is on potential coin. Also it is less risk on having investment for long term because price change positively as time goes by and many investors come into crypto which make good result in the market.