Well, I am back here after a long hiatus.
To make a long story very short, I just couldn't do it. I could not stick with the fasting plan on my own. I'd do well for a week or so, not see any difference, feel like it didn't matter what I did so might as well just eat whatever - and then I'd binge for a few days. Needless to say things only got worse. I went up to 161 by October.
At that point I was almost clinically depressed. I went to my doctor and begged for help. He put me on Phentermine, a prescription appetite suppressant, and gave me a sensible meal plan and orders to "get moving".

I used the Phentermine for about a month and a half. It gave me a huge burst of energy and the ability to go several days on 500 calories a day. Within that month I lost ten pounds. I learned what my "food triggers" were. My cravings stopped. I joined a gym, where I do high intensity interval training twice a week. On other days, I bike and skate with my kids, and when I take them to the park I get up and do the monkey bars and stuff with them instead of sitting on a bench watching. I feel amazing.
I weaned myself off the Phentermine and I have not used it since Christmas, but I am continuing to lose weight - slowly now. Over December and January I lost another ten pounds. I am within 5 pounds of my goal weight. My doc actually suggested the 5:2 as a good maintenance diet once I reach it. I have had a couple plateaus but I now know that I can get things under control quickly, and even have a treat now and then without feeling like a failure and slob afterwards.
My current stats:
Weight: 141
Waist: 30"
Hip: 40"
Thigh: 21"
Arm: 10.75"
I'll post a new pic tomorrow.

Use of prescriptions I hope is not a no-no to talk about on here. I'm not pushing it at anyone; just saying it was a tool in my box. I don't think I could have kept this up without it.