Ответ в теме: English idioms

№33 to set one’s mind on something — to be intent on; to be determined about
1. It was true that he had his ways. When he set his mind on something, that was that.
2. I may as well tell you that I should have thrown it up, only, I’m not in the habit of giving up what I’ve set my mind on. (J. Galsworthy)