The phrase "mind frame" refers to a person's way of thinking or their mental attitude. It represents how someone perceives and approaches things. Full definition
But before you even think about entering a new relationship, you have to be in the right mind frame so that you're truly ready to love and be loved. (elitesingles.ca)
He says that it puts him in a great mind frame before getting down to business. (inc.com)
Not only is this hard to do in practice, but approaching life from the same mind frame all the time doesn't make sense. (romper.com)