I think all humans to some extent have anger issues although there are certainly those who have extreme issues of anger or rage.
Theres a wonderful sefer called Haseir Kaas Milibecha that was translated into English the Hebrew English version is called Remove Anger from Your Heart(the Hebrew is on one side and the English on the opposite facing side so you can learn the Hebrew and when you get stuck go to the English or just read the English if that suits you)
Something that personally helped me is the following:
I think this and remind myself about this a few times a day especially when I feel myself getting annoyed with someone or something…
Parshas Kedoshim: Arizal – How Can We Possibly Love People Who Have Wronged Us?
The Arizal says that before davening one must have in mind to fulfill the mitzva of loving every Jew. What is the connection asks Rav Shimshon Pincus Zt”l. He explains that if we believe that everything that happens to us, whether pleasant or otherwise, comes from Hashem than the people who deliver Hashem’s will are simply puppets. We therefore harbor no resentment against people who have wronged us.
If we want Hashem to answer our tefillos we need to acknowledge that he is the master of our fate and there is no better way to prove we believe that than to love everybody regardless of what they have or haven’t done to you.
(From Revach.net)