Selling is not a good option at the moment.
If you are satisfied with the price today, then profit is profit. No matter how big the price of bitcoin will reach sooner. Once you had enough on it already, go sell it at your own comfort. But yes, it is not a good option if you are going to sell right now, selling some of your coins will be good for you for having money to spend but don't do the same with your remaining btc.
Selling is definitely not an option considering the prices that are further reaching newer heights of insanity by going completely crazy over markets and this thing is getting real serious as we are hitting some real big numbers in terms of market cap as well as users, so holding on and waiting for a real time to sell it is the best part if you are not in an emergent need of some cash/fiat.
Just like what is happening right now the price is rapidly increasing and it is now on $1,337 though a couple of hours ago it was $1,346 it's only a $11 difference but that is a good sign that bitcoin is already going to come up again. So the most patient person in the market today will get a good profit in the end.