Which kind question be "best time to sell your investment?  Or abi do you think Bitcoin na get rich quick scheme? Because if that's what you thought, then I'm sorry to disappoint you that Bitcoin is not a get rich quick scheme, as it is a volatile decentralized digital currency whose price value fluctuate with respect to market demand and supply. Hence, the best time to sell your Bitcoin is always from 5 to 10yrs after investment. Since by such timeframe, Bitcoin is likely to have undergone halving, fall dip and skyrocket to paved way for another new All Time High, and result to either 2 to 5x of your investment capital. Hence, it's best to invest what you can always afford to lose, so that you can stop getting worried whenever it's price value falls or increases by $3000.