Bitcoin is the first blockchain based decentralized crypto currency which has a large strength in the market so day by bay the price of bitcoin is increasing. If we study last few years then we can see that in 2015 when i introduce with bitcoin then i was seen that the price of bitcoin was $400 but in 2021 bitcoin hits plus 60k usd which is 150 times just in 5 years. So there is no other real way we can earn 150 times just in 5 years. For that reason i will tell that never go for sell bitcoin just hold for 10 or 15 years and take benefits.