The holiday time can be stressful for many people because of past memories and current conflicts. I suggest that you start a daily exercise of forgiving your brother for little things, those that can make you irritable. Try to take one small incident at a time and work on the process of forgiveness as outlined??in the “Need to Forgive?” section of our website. More detailed advice is in the book, The Forgiving Life.
Our most recent Forum discussion for adults addresses this issue of forgiving the small things.
With daily practice in forgiveness, you likely will be more ready to meet and interact positively with your brother.