Positive vibes for this long journey

My youngest son is three months old and I feel like my weight is stuck. I gained 40 pounds during my pregnancy and 20 pounds before I got pregnant. I am currently 170 pounds so all together, I want to lose 40 pounds. 130-135 was my average weight. I always seem to be the only one on this journey. My husband always seems to be doing his own thing to lose weight and I could never be on the same page with him. For someone who loves food and wants to lose weight, what keeps you going on your journey alone?