Starting over. 100+ to lose again.

Hello. So I'm coming back to MFP to try this weight loss again. A couple years ago I managed to get about 50% of my way to my goal by losing 55 pounds. I encountered obstacles that pushed me off course including a house fire and then going back to school. So I have pretty much undone my previous progress. I have a busy schedule including a full-time job, 4 children, school in the evenings, and 2 hours of commuting to and from work every day. One of my biggest struggles is finding the time to get physical activity as I work a desk job. I made my best progress last time when I had others with similar goals in my friend list, so I'm looking to add a few people.