Does anger management therapy actually work or is it a scam?

My wife basically told me I need to get help or she's done. Fair, I guess. I get SO mad at stupid stuff - kids being kids, traffic, articles online, doesn't matter. I yell, I throw things sometimes, I scare my kids. I hate that version of myself but I can't seem to stop it. The therapist she found specializes in "anger management for parents." Is this legit or am I gonna pay $200/session to have someone tell me to count to 10? Real experiences only please.