A Prayer of St. Thomas Aquinas

"Grant, Lord my God, that I may never fall away in success or in failure; that I may not be prideful in prosperity nor dejected in adversity. Let me rejoice only in what unites us and sorrow only in what separates us. May I strive to please no one or fear to displease anyone except Yourself. May I seek always the things that are eternal and never those that are only temporal. May I shun any joy that is without You and never seek any that is beside You. O Lord, may I delight in any work I do for You and tire of any rest that is apart from You. My God, let me direct my heart towards You, and in my failings, always repent."