Music helped me alot when I was tempted to call but I knew it wasn't going to help. I never got the reaction I wanted from the call. In fact, most of the time, the call made me feel even worse. At work, I kept headphones so I could listen to music that would distract me.
Another idea is trying to distract yourself with whatever your work is. Is there some kind of project or meeting or something so you can redirect your thoughts? You already did the thing most of us did/do...you came here. Journal away about whatever you would tell him. Start the post with Journaling...so we know that's what you're doing or keep a written journal handy. Sometimes just getting out the thoughts will help and you won't feel like calling anymore.
