Everyone has Thier own taught on Bitcoin investment, but personally I taught that Bitcoin is long term player all those investor will be succeed who plan to hold Bitcoin for long-term, because with time to time after dip bitcoin rise again and make new ATH while this procedure take time , so that the reason I prefer to invest longterm. when you bought it at dip around 17k and then hold it for 2 or more year till bitcoin make new ATH make you more profitable as compared to if you bought it for short term.