Today I found out that my former boss, who had fired me without a performance plan or giving me a reason why, personally called an intern after she heard the news and had responded with negative feedback on my termination in an employee satisfaction survey - he didn't mention me by name, but he implied to her that there was more to the story and that she would have done the same in his situation. My severance contract included non-disparagement on both sides, and although I'm curious as to whether this violates it, the call occurred months ago, was verbal, and is exhausting to think about trying to pursue legally. More than anything, I'm looking for mantras and techniques that others have used to let go of these types of moments when the best option is to let it go and continue working a wonderful career. (I am also still searching for my next role, and I know that makes the anger a little tougher to currently let go of!)