It happens to the best if us from time to time. Always best to re-member when we feel anger, that the apparent external circumstances that upset us are projections of the mind. If we are able to real-eyes this in the moment we can then choose not to re-act, and instead to be still and quiet, putting our attention on the felt physical bodily sensations (the energy in motion from the kinks of consciousness/tensions), thus receiving the gift the apparent circumstance offered us. With repeated practice the tensions which cause the upsets will dissolve so similar upsets will occur less frequently (or will no longer upset us).
Once we have "done" this and come back to centre, no longer feeling angry, we are much more likely to be able to reply harmoniously (act rather than react) and create positive effect.
Sat Nam
This... would be useful in long term anger problems.
Thank you.