I did find it hard when I first invested late August 2017 and the market plummeted but it's been easier in the bear market at the start or 2018. I think I mentally wrote off my money. It will either go to zero or make a lot, I'm not going to sell low, crypto is risky but the rewards should be good if it starts to get mass adoption. Powering up helps because my money is locked in and I can use it to earn more.
RE: HODLing is hard