I am not worried about bitcoin price fluctuation and i don't invest in bitcoin. I just consider bitcoin is another form of currency, i will spend and earn as i do for fiat currency. Whenever i want to buy something will buy using bitcoin if available or else convert to fiat and buy.
So investing in bitcoin was never my intention to do so, sometimes i trade, gamble or invest bitcoins in bankroll etc... but just buying and keeping bitcoins in wallet and wait till price reaches high as expected seems not good idea for me