think for oneself

The problem is, people only think for themselves if you tell them to.

I decided to think of them as friends, at least for the time being.

Tell him you need to think the deal over for at least a few days before making a decision.

I thought about us for the rest of my time in Washington.

I thought for a moment, as the position was very difficult.

I've got a new game I thought up just for you.

I thought for a moment, but nothing more came to mind.

I said what I'd been thinking for the past half hour.

Just think for a moment what we might be able to find out from him!

Better still, they did not have to think much for themselves.