I don't think it's just a correction, but a severe dump, in my opinion. at such times we are psychologically tested. especially for those who invest at the beginning of 2018, of course they feel very much mental stress. but this year a little hope reappeared
2018 is over now and markets have started to even recovered in 2019 and due to which we can see how it is rising and reaches 8500$ at present and soon it will rise 10k levels and more . So rest assured to start investing in this year.