i have experience this too, i am buy bitcoin when i see the price is going to down in 888 and i missed the price in 918 for selling and now the price is getting to deep in under of 800 so for now, i only hold my bitcoin and waiting for next bubble and i hope the price will be increase soon.
When you trading you need to be very careful towards market because when the price increases it won't stop there for many hours, you need to be very accurate when you are trading means, the value will deviate bigger loss in the margins, better be alert when you are trading with bitcoin.