Is there something that repeatedly upsets you and makes you angry?
God may be trying to get your attention so you would step up and do something.
Yeah, most of our anger just reveals we're focused on ourselves and our own agendas...
... leading us to simmer or lash out with criticism.
But...
If you keep getting riled up about the same issue or problem, God might be calling you to take some positive action to address it.
There is a verse in the Bible that says:
"Be angry and do not sin; do not let the sun go down on your anger" (Eph.4:26).
One way to apply this verse is to calmly and lovingly come up with an idea or plan of action regarding that thing that keeps provoking you.
And do so before tonight.
Pay attention to what your anger is telling you.
While anger typically leads to evil and folly, God may use it to call you into something constructive.