I left home angry at a lot of things sometimes ago, especially with one of my siblings. I woke with an expectation to receive an acceptance mail for a job I applied for but it was otherwise. I was already pissed cause I had passed the first stage and really tried my best to get the offer.
Then it felt like my sibling was deliberately doing things that would get me angry. I left home angry at her. I got to work and went to sit alone. I started to play out what happened in my head, though my sibling had her fault, I knew I had reacted the way I reacted because I was pissed already so I sent her a message and apologized.
That's not even the point I am trying to drive at. I got to work angry and it was very obvious, the whole issue so got me that it spoilt hours of my day. I was cranky and just stayed alone for hours, not talking to anyone, just angry.
Anytime we let anger get the better of us, we end up regretting it half of the time. Disappointment may come, but we need to handle it well and make sure it doesn't get to us or allow us harbour unforgiveness eventually.
I could only calm down and be my normal self when I talked to someone about it, so if that's what it will take you to erase that anger just do it. Anger can ruin your day, say what aren't supposed to. Don't stay angry.
Eventually, even the scripture is against anger and pleasing God should be our optimum desire.