If I were you, I would normally wait for the next correction and bought Bitcoin after the price decreased. However, there is a huge upcoming event which may cause Bitcoin value to increase even higher. It is good to invest in altcoins during correction. A lot of people exchange their altcoins for a lower price in order to cash out. However, it isn't as profitable as investing directly in Bitcoin which its price is very likely to increase over time. Try to understand how Bitcoin and altcoins work, don't invest in something you don't understand because you will blame it sooner or later.