Psalm 73:26 “My flesh and my heart may fail, but God is the strength of my heart and my portion forever.”
*I'm sure we all have had times when we have been disgusted, annoyed, or upset by someone or something. Our flesh may have even gotten the best of us by reacting to the issue before thinking things through. Perhaps it was even the slightest reaction of talking about the person or rehearsing the situation with a friend, even though we should just go to God in prayer about it. This is an example of our flesh failing. Particularly, if we have not listened to God on what to do or how to handle things. Never the less, God's mercy prevails during any situation and we can rest in Him.
We are able to rest to take a moment to think through the situation with Him, take a break from it period by learning to give it to Him, renew our mind on how to move forward with His instructions, and find a peace of mind. You see, we will have humanly reactions, but thank God for His mercy and grace. He covers us with mercy because He forgives our thoughts and if there is a reaction, we in turn develop mercy towards others, and because we are including Him in everything His grace will abound towards us. I pray you let God in the situation, but most importantly in your heart.