You have already received couple of strong suggestions, excellent advise there you should try to incorporate.However, both of them are extrinsic rewards focused

You have already received couple of strong suggestions, excellent advise there you should try to incorporate.However, both of them are extrinsic rewards focused. When faced with external challenges (things outside of your mind or physiology) changing your outlook, circumstances or expectations in order to adapt to your situation is certainly a good way to handle it. I would only offer one suggestion - if this is an internal struggle by any chance. That would be to find your core empathy for yourself and your colleague, which means be compassionate to yourself and understand why is it bothering you so much. And be compassionate to the other person and try to determine what is driving their behavior. These are both hard things to do. I can't tell you how exactly to do that - but try reading a few books like "Dare to Lead" by Brene Brown or "The 7 Habits of Highly Effective People" by Stephen R. Covey. Good luck!