When I am assailed by negative feelings, these are akin, I imagine, to the pain of gunshot wounds, for example.
Negative feelings are a sign that I have chosen the ego as my guide and asked it to interpret my situation for me.
I then take the focus off the gunshot wound and turn my attention to who is holding the shotgun: me.
Bad feelings are not nice, but I feel them, extract from them any useful information about their source, release them to the Higher Power, then get on with the day.
It does no good to dwell on them or amplify them by giving them the oxygen of unnecessary attention.
Like physical pain, emotional pain is a nuisance, but it never licenses self-absorption or self-pity. It is a small aspect of life. It is not life.