Friends, when you know that someone is out deliberately or not to make you angry, do the opposite by smiling, being happy , being cheerful and being joyful. For if you respond to them in anger, you will be a fool. Ecclesiastes 7:9 says "Be not hasty in thy spirit to be angry: for anger resteth in the bosom of fools."
Never give anyone the satisfaction that he/she has succeeded in causing you pain and hurt. Even if you are hurt by it, you could address the issue with the person later; having it in mind that the sun shouldn't go down upon your wrath (Titus 1:7).
In essence, you should react differently when faced with a situation that should get you angry. Are you facing a difficult boss or you are faced with a difficult wife/husband at home? Start reacting differently from what he/she is used to. A woman of God once told me that she was facing so many crisis in her home and marriage. She did all she could but it wasn't just working. Then she went back to God in prayer. And she heard these words in her spirit "the meek shall inherit the earth" . She went in search of where it was located in the Bible and she found it in Matthew 5:5. There and then she asked for grace and began to apply meekness in her marriage/home and today there has been a total transformation. Praise the Lord!
So you see, most of the anger we put out towards one another will either fuel the issue or just leave the parties involved broken. And to still have your joy intact,
you have to learn to keep quiet, smile and walk away. Proverbs 15:1 says "A soft answer turneth away wrath: but grievous words stir up anger. "
It makes you a wise person when you just quietly walk away. What is wisdom? Wisdom is knowing what to do and doing it. Proverbs 10:19 tells us that "In the multitude of words there wanteth not sin: but he that refraineth his lips is wise."
So, be wise. Start reacting differently. Keep anger away from you and above all let nothing steal your joy.
The joy of the Lord is your strength!