The thing about anger, is it is the product of of everything that is prideful and selfish. See it is easy to get caught up in the emotional aspect of life. It’s easy to let it fester and stew and take over your thoughts. I used to be angry. I used to hate and make fun of others. When I came back to Jesus, He pointed many things out. If you cannot see the good in others or accept age, gender, color, etc. You are quickly falling away from the grace and blessing of God. Sometimes, with those close to me, I can see things so clearly. Yet their hearts are often not ready for the discussion or thoughts that have. To be compassionate, understanding, and always focusing on the good instead of dwelling on the bad is not something you can gain on your own.
Put on then, as God’s chosen ones, holy and beloved, compassionate hearts, kindness, humility, meekness, and patience, bearing with one another and, if one has a complaint against another, forgiving each other; as the Lord has forgiven you, so you also must forgive. -Colossians 3:8, 12-13
If every little thing gets under your skin then the person you should be angry at is yourself. Honestly, the person with the problem, both mentally and spiritually, is you!!! The only way to overcome this feeling is to learn how to ask God to take it from you. God has been swift to take my ill feelings away after frivolously asking God to help me love more. Only recognizing that you have an issue with anger is the first step. After all how can you fix what you never recognize is broken?