When you decide to sell, be it today or tomorrow or whenever, chances are you will sell at the bottom. This will cause you massive depression, way worse than not selling at the peak to rebuy cheaper.
Buy and hold, or risk selling at the bottom and losing your position. After this dip stabilizes, we are going $2000.
i do not think people will get depressed if they bought at $400 and sold it at $900. Profit is always good especially it is huge. I think those who sold at $1000 have bought back when the price hits $800 sub. It would be great to reach $2000 but I think we are @ $1600 at the end of this year.