make up one's mind

“I know it’s not going to be an easy election to make up one’s mind.”

It is a terrible thing to determine in one's heart to do a wicked action: it is bad enough to give way to temptation, and so sin against God, but to make up one's mind to break His commandments, is far worse.

When Rendalen was in the humor, he would play by the hour together, just as though no one were in the room; one might make up one's mind to go away at once.

As a rule all that is necessary for this is to make up one's mind to do it, though there is a tendency on the part of a great many people just to let each evening be like every other evening and because of lack of sufficient interest they lose that variety which is the spice of life.

The only means of strengthening one’s intellect is to make up one’s mind about nothing—to let the mind be a thoroughfare for all thoughts, not a select party.