Lama Ole’s answer:
I completely stand behind my advice that we shouldn’t do this. Mind is a creature of habit. If you allow yourself to be angry once today, then you will be angry twice tomorrow. And the day after tomorrow, you’ll be lonely because our fellow human beings don’t like angry people.
We have already created a whole generation of singles because everybody takes their own trips and feelings too seriously and thinks that they are so important and meaningful. Buddha’s and my own advice is to treat anger as a completely embarrassing, unpleasant, and slightly too clingy customer. Don’t put any energy into it. If the anger comes back, then try again not to put any energy into it.
It is important to remove the conditions that might cause anger. Always remember that the anger wasn’t there before, it won’t be there later, and if you live it out now it will lead to a lot of suffering afterwards.
Don’t create dramas; keep a stiff upper lip and put on a presentable face. Then work it off and let go of the things inwardly during meditation.
It is also important to know that Buddhism starts where psychology ends. Some people who are on a Buddhist path need a good psychologist, and that is all right. But if you have reached a level where you can stand behind yourself and your vision of the world, then just let things pass by without putting energy into them.