Higher than the previous ATH and lower than the next one.

Agree. The next bull run would be very tricky for this who view Bitcoin speculatively and wish to profit from it (which to an extent is everyone). Having an investment plan is important before buying in; a investor should have a idea of their projected ROI and a rough time frame to achieve that, this of course can be adjusted with time.
There's a lot of focus on the time to buy in, but when to take profits is also important and could save one from regrets. This thread- (SSS) - A Sane and Simple bitcoin Savings plan could prove useful for someone looking to draw up a savings plan.