One mistake guys make in their first 4-6 years in bitcoin is selling too much too soon, and another mistake is stopping and/or slowing down in their bitcoin accumulation through ongoing, persistent, consistent, regular and perhaps even aggressive buying. There tends to be a need to continue to accumulate, since it is quite rare for guys to be able to reach over accumulation status in one cycle or less.
Investors with this kind of behavior of selling too much of their Bitcoin portfolio lacks the patient to hold for another cycle and might be selling some portions of their Bitcoin profits generated over the years to mitigate there risks of investments in Bitcoin. Such investors lacks the confidence & the Will-Power to continue accumulating Bitcoin consistently and persistently because they have allowed themselves to be distracted with the violatility of market. Yeah slowing down on his accumulation pace might hinder an investor from reaching his over accumulation status, that's why it's highly necessary for an investor to be persistent in accumulating Bitcoin and sometimes going aggressive is right because it keeps him at a positioning advantage over the market while stashing enough Bitcoin overtime without monitoring/timing the market regardless.