What are your experiences with DBT?

A couple of sessions ago my therapist (CBT) suggested moving onto a different form of therapy at some point, and mentioned DBT as a potential option. I've seen it come up quite a bit here, and have looked at various sites about it, but I'm still struggling to conceptualize what exactly it does, how it differs from CBT, and if it would be helpful.
From what I've seen, it seems to be mostly about not letting rampant emotions control your actions (e.g. not flipping out over things or people), and kind of suppressing your emotions or keeping them at a safe distance. Is this really all there is to it, because I can mange my actions and behaviour well enough to consider myself high-functioning. So I guess I'm just not sure where the benefit of this lies really?

As some of you seem to have experience of this, I'd like to know what kind of stuff happens in a session, who talks about what, what you've learned from it or how it's helped you. Less of the 'official description' and more of your personal experiences of it basically.

The mindfulness and meditative part alone makes it 100% worth it. When you're mindful, you open your mind and life to new possibilities. Do it if you can get into a program.