Starting Over Again!

I'm starting over again!!! I have 2 kids 17yr old type 1 diabetic and 14yr old with intellectual disability. My work schedule is everywhere and between work and kids appointments I find it hard to find time for myself. I do have feet, knee, and back problems. I'm hoping that loosing weight will decrease the pain in my feet and knees at least. I have to fight the pain to just work out, I don't want to let the pain discourage me from getting me to my goal. I'm the heaviest I've ever been and trying to take control before my health gets worse. My fiance and I started to take our dog on long night walks since he works graveyard hours. I reduced my calorie intake and hopefully stay on track. I seem to slip when i take a vacation once a year with the family. I need motivational buddies to help me stay on track and I'll try to do the same.