What is your exit point? Where will you sell your coins? How much % of your stack will you sell?
I don't really have any specific percentage to sell my bitcoin for now because I'm planning to hold them for long-term. And for my trading account I normally exchange the falling coins (red) with the rising one (green) for more profits.
Right now i don't have yet bitcoin earn,but in my opinion when i have that much value of bitcoin then i will sell it when the price is right and highly profitable.Although i don't have that much experience when i see through it i think also that maybe it depends on the situation your right in.