Hi Michael,
Coming just from my own personal thoughts to this matter, I would say yes, it is beneficial to work on one's psychological "stuff." Just be aware that even though you're practicing insightfulness relative to mindfulness, this is different from let's say: Vipassana insight meditation (I'll just refer you to MTCTTB - Daniel's book, for further clarification on that). Also, you might find it helpful to check out the DhO board for the thread entitled: "The Shadow Knows..." - a discussion about working with the shadow side of ones humanness.
Sounds like you've been making good progress and some significant changes that are beneficial not only to yourself, but also your interaction with others.