I have several positions with double digit returns that need pruning.
Do not think the market just goes up, it also goes down. Since I have no idea where this will stop, the market can have a 20% up year for all I know, I just prune some when positions are sporting double digit gains and everyone is happy.
When people are content with the market, and you have profits, take some off the table.
When people are miserable and scared, deploy cash.
Straw hats in winter.