I already change my strategy when it come in investing, because i want to work my money for me and im making sure that i can make profit every week or maybe month. 
My best investment strategy is i we will save a lot of money on my wallet and when i see that the price of bitcoin is we will dump or decreases it's value to $7000 i we will buy a lot of bitcoin and i we will hold it until the value of it is we will be $20k and then im gonna sell it.