It has been said, "it can take years to build a reputation, and seconds to lose it".
If the people you deal with frequently remember your outbursts, you might be able to make comments like;
"You may remember my anger issues, well I am trying to reign them in."
"This is something that would have made me angry before."
"I need to take a walk for a few minutes to manage potential anger."
If people can recognize your struggle, they can be sympathetic and may even try to help.