There is no good or right answer to this. This depends on a multitude of factors that are specific to a person's situation. The first thing that would have me wondering is if there is any merit to the Super Cycle theory that claims that we might not be at the peak of the current cycle, but that this cycle and the next will merge with us being just at the beginning. That would mean that the price of BTC is yet to go up to its peak. On the other hand, more widely excepted models suggest that we are running through a normal cycle that will have it's end sometime this year. Just those two concepts will have you scratching your head on what to do.