Yea that is always the difficult part, knowing when to sell. Sellers remorse is no fun, and it might even be worse than hodling through the dips. I think 10 years from now it will be higher than wherever it peaks during this cycle, so hodling is the right move in the long run. Though if you can sell near the end of this cycle and buy near the bottom of the next one you can greatly increase your holdings... Not near as easy to do as it sounds though.