I've certainly been there. I think about losing weight every single day, but often cannot follow through on it. That's not something I'm proud of.
When I've been successful, it's been because I put weight loss first and made a total commitment. Otherwise I start in because I know I must -- I'm MUCH MUCH MUCH heavier than you are -- but am too easily distracted by bad days and disrupted plans.
If you can get yourself to the gym, that's a very positive step. You know you'll do better when you rope in the eating too.
I'd love to hear from others about how you got back on track.