Doesn't really help because there is no way you can entirely avoid knowing about prices with how we are entering the mainstream world. I tried it for a while but gave up on it with how pointless it is.

Even if your current target is to hold your coins beyond 2020, the price increasing with 50% this year will very likely be so tempting for you to cash out, that you will actually do it. Most people aren't firm hodlers.

It's insanely difficult for people to resist the temptation of selling, especially if they start thinking about how the price can go down and you miss out on a selling opportunity. It's a mental war game for real.