I've got an incredibly similar history to yours - did good and got down to about 140 then, for about 3 weeks, just blew it all off and went back up. I've only restarted this week.

A co-worker who had some success said that she battled her way down to goal and now lets herself do whatever on the week-end but stays strict during the week... not sure if anyone else has done that and been able to maintain though.

Personally, I find I do better when im checking in on some countdown club - any interest in doing a five-week July 4th countdown? I really want to be in the mid 30s by then.