At what price would you sell your BTC?
Definitely, when the price is much higher than the price when bought. It means that buy low, sell high, not buy high sell low.
In this case, we invest for profits, So, we can make some plans forward to get profits by percentage. for example is that if we have pointed the percentage of increase 25%, we will sell our BTC around 30% from the whole and others.
But of course, no need to make it as guidance because sometimes the crypto world will always be changing.