If you hold for a long term it is a good option to set goals, for instance close 1/3 of position at the achieving 50% of profit, 1/3 150% of target and leave a bit for future. So, set target in the different price level and close your position bit by bit
This sometimes works, but sometimes causes you to make huge mistakes. Check the coins makes 100x on exchanges, most of the early adopters sold their coins too early and they couldn't enjoy the ride.