Buy low sell high doesn't work anymore because i can't fucking buy low, the price is climbing constantly 
The price is still low even we have reached $2,500 , some people predicted it will go to $10,000.Before then you cannot completely afford to buy in that pedicted price .
Think about it and start decide whether should buy it now? Or later when the price on the highest!
Now there is a great chance to buy bitcoin. The price has gone down a little and so many now buy bitcoin for long-term investment. I will also buy coins now to sell them in a few years
Some people might would get panic and start to sell everything they have , you have to ignore about this and wait a little longer.
Future of bitcoin is indeed still unclear but the growth clear enough to see the price will keep increasing year by year.