commit oneself to someone or something
to devote oneself to someone or something; to be faithful to someone or something. He committed himself to his wife. She settled down and committed herself to her job.
commit oneself to something
1. to agree to something; to promise or pledge to do something. Yes, I will commit myself to the repair of the door frame. Will you commit yourself to finishing on time?
2. to promise to support and assist something. I can't commit myself to your cause at the present time. Maybe next month when I am less busy. She committed herself to being there on time.