It depends on your own mind game. For me, it is just a small pullback because bitcoin can't just grow and increase as it wants. There will be people who will think that it is time to dump their bitcoins, or like you said they are taking their profit. I've been in btctalk for more than 2 years and I'm certain that it is enough for me to stay no matter what happens.
If we look at a yearly chart of Bitcoin, we can see that this is just a little correction. 2019 had been an uptrend for Bitcoin and it is normal for people to cash out whenever they feel it is time to take profit so we do not need to worry about this because as they take profit new entry of investors is coming in.