Sibyl sent me this quote in one of her emails yesterday, it helped me greatly.
Grant, O 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 with a purpose of amendment.