Pardon my crude language, but there's no need to shit yourself. If I had a BTC for every time I heard about how we'd all be living in a smoking crater in an ice-encrusted hellscape ...

Bitcoin dropped $9,000. We're still here.
Trump was elected. We're still here.
North Korea got nukes. We're still here.
Great Recession. We're still here.
9/11. We're still here.
Y2K. We're still here.
Gingrich became Speaker of the House. We're still here.
The Bulletin of Atomic Scientists set the Doomsday Clock to 3 minutes to midnight. We're still here.
Reagan was elected. We're still here.

Stop worrying and live your life.