making up one's mind

Listening to it and abiding by it means making up one’s mind about what is good and evil.” Oh right!

It seemed almost a hopeless case, now it was come to the point; but I felt that making up one’s mind was half the battle, and I was up now, and meant to do or die.

But there is no making up one's mind entirely to the absence of those we love, and upon whom we have been dependent, and Sidney found himself no exception to the rule.

It is merely a question of making up one's mind.

“Nothing like looking around a bit before making up one’s mind, eh?”