All of us are talking about this bull run is encouraged by institutions.
Suppose as an individual, will you sell your bitcoins at a good price or just hold them?
If you are not sure you can just sell half of it at least you still have some more if the price goes up and the other half you could buy other coins with that. It's better if you spread your investment to multiple coin and not just on Bitcoin.
I like your advise ,we can call your advise as a safe zone in doing trading.It's safer to sell half coins to get profit rather than being greedy and waiting it's price to go high ,if suppose it didn't go as planned and the price dropped then we will face serious loss.I have done this mistake ,I invested all my btc on one coin and gained huge lost. So everyone be careful in this crypto world.