Hi girl. Don't beat yourself up or think you're loco.
You are still careening to the extremes but you know that. It's hard to get away from that. Some things that worked for me were:
Elastic bracelets. When I started to obsess or analyze, SNAP. It got pretty painful but it worked.
I visualized a big stop sign when I caught my brain wandering. I'd also say (out loud sometimes) - Here we go again. Something like that.
You'll find that you're on sooner doing something like that before you start again. Set your goal - such as "I will learn to control my emotions better" and systematically do whatever you determine works for you to fulfil your goal.
Rejoice in the victories, regardles of their size. Learn from the "mistakes" and don't dwell on them.
You've got as much time as you choose. There's a lot more wiggle room than most of us think in our situations. Really.