buy buy buy BTC~~

You may be be very right but I am worried that BTC price when rising too high , I do not know when to sell. I think maybe 600 is good, then I think maybe 700 and in this dilemma I fail to actually sell it at best price most of the time

I guess this must be a problem for many long term traders.
I guess just by buying bitcoin will not guarantee you'll be wealthy. but maybe when you're using bitcoin that you have to play a trade, and use bitcoin large in the trade, chances are you can get a greater profit, and make you richer quicker