From Longman Dictionary of Contemporary Englishstate/frame of mindstate/frame of mindthe way someone is thinking and feeling at a particular time What happened had a lot to do with my state of mind at the time.in a good/positive/relaxed etc frame of mind She returned from lunch in a happier frame of mind.in the right/wrong frame of mind You have to be in the right frame of mind to play well. → mind
Examples from the Corpus
in the right/wrong frame of mind• This in turn puts him in the right frame of mind to be helped to overcome the problem once and for all.• If you do you will approach the next interview in the wrong frame of mind and it will make you less effective.• That's the caddie's duty, to let the player keep in the right frame of mind.• Get them in the right frame of mind - keep atmosphere relaxed and friendly 2. 