Exactly. A lot of my success has been due to timing of when I entered mining, slow and steady growth of the farm through upgrades/expansion up to my power available limit. That fixed power limit means that there are long periods of time, well, up to a few months at a time, where the
BTC is not being spent and just accumulates
Making purchases paid in BTC I try to time when the exchange is high, same for when I sell.
If you are in the mining biz to make 'a quick buck' you need to seriously rethink things. Mining is a business with results measured over many months and for a true picture, over more than just 1 year.