It will recover, Nov/Dec is the worst time in the market due to tax selling.
I'm down a total of 60K this year, 20 of that being from the last 3 weeks of tax selloff. You only lose if you sell. You should only sell if you dont believe in the company. If you believe in the company and dont need the money, I would let it sit (which is what I am doing).
The other 40k, I sold to tax write-off myself so I can write off against 2019+ gains
As for Amazon and the others... they will recover. Amazon was 1400 8 weeks ago, went back to 1780 2 weeks ago, now at 1400 area. Wait for Feb/March 2019, Amazon will report its earnings for Xmas =)