a few days ago ethereum experienced a drastic decline. and it turns out it's currently under $ 200! My personal predictions are wrong, and may not be true. what's the next step?

I think vacationing is a good idea while enjoying a vacation !!
Ethereum fall is worrisome, it goes down and when bitcoin rise it refuse to go up with bitcoin, when market stabilize ethereum might get back to 1k. Also i am proved wrong, at beginning of 2018 i was predicting 2k for etherum with looks of unfolding events it doesn't look like it will hit 2k this year ending.