I started out at a similar weight as you and I think I'm on my second account now (or possibly third?)!
I'm sticking it out with this one though.
I know it's kinda embarrassing to fall off the wagon and need to start over, but no one here cares, as most of us have been through it ourselves. In fact, I carry an extra admiration for those that have toughed it out for years even if they've yet to reach their goals. I'm going on 9 years myself.
But you can totally do this! Stick around to help stay motivated.
I see your ticker has 220 for your goal which struck a chord with me; while I've spent all of my life obese (or worse), I did manage to get down to the 220's twice before going back to old ways and regaining. When I reached 360 I promised myself that I needed to try to get down to at least 250, but I secretly had my eye on getting to 220. Part of me believed I couldn't do it, but the rest of me stubbornly pushed myself further and further. I finally made it under 220 for the first time ever this year, and then I got pregnant!
I'm currently on a pregnancy break but will definitely get back on the wagon as soon as I can next year.
Anyway, hang in there! I'm rooting for ya.