You know that question really is for all to understand, especially for any investors, they should know the line like, how much do you sell, how much do you keep, and when do you do this.
My experiences so far, considering Ive been pretty much figuring it out as I went along, Ive not done bad so far.
So I remembered putting 3 eth into 0x and cashed out about 30% of it later for 6 ETH, letting the rest ride. And later putting 5 eth into Chainlink and cashed out about 90% later for 19 eth.