I think this metaphor is imperfect. My anger is not necessarily something that has to be stewed on. ie, my mind is not a pressure cooker where anger will never

I think this metaphor is imperfect. My anger is not necessarily something that has to be stewed on. ie, my mind is not a pressure cooker where anger will never dissipate unless it's released. For instance, I spend zero time thinking about the wrongs done to me in middle school, even though those conflicts were never really resolved in any sort of satisfying or adult way. Crucially, the triggers for those issues are lost to the distant past. So, when must I address my anger? Crucially, it's when the situation which led to it goes unresolved; eg: I work with someone who is bullying me, and I must resolve it because I'll see them every day. Or, I'm angry about something my spouse does, but I've never talked to her about it. In that case, "keeping it bottled up" is relevant because the conflict will be refreshed daily. ie, it's the externality of the stimulus which makes the "bottled up" metaphor relevant.