I'm like you - I can dwell on things for days.
I think there is an upside and a downside to how we deal with emotional things. Those of us who dwell for days may gain a deeper understanding, but then again, it can lead us sometimes to think too much - and that can drag us down (at least that's what I find sometimes!).
Those who deal with emotional things straight away may get the reverse - they risk not fully processing what's happening and it can lay undiscovered for some time. However when its another person who may need help, the quick response may be the most useful.
I suppose a healthy balance between the two is best, coupled with an understanding of whatever the situation is - no hard and fast rules!
Congrats on being semi-sober for 2 months as well - its good enough for now - one step at a time if you're trying to dry out completely