Buy and hold, or risk selling at the bottom and losing your position. After this dip stabilizes, we are going $2000.
This is true and i think the one who get panic on dumps gonna loss big and will blame bitcoin volatility for their loss 
Dumps are actually opportunity to buy cheap bitcoins
For bitcoins, take my advice, Do not sell at the bottom ever. Bitcoin will always go up in every situations no matter what happens. If you don't have trust and dump, then the person buying at that dump will be lucky to buy it as cheap rates and earn a lot on the next bitcoin pump.