Need help getting motivated to start.

I am 7 weeks PP and I still haven't had my pp checkup and I am not getting it until the 2 wks of september. I joined WW 5 weeks ago with good intentions and I haven't really read any materials, Not counted anything. I joined a few yrs ago and had great results but thistime I just find it hard to get into it again. I went to all the weigh ins for the 1st month and then canacelled my membership bc I wasn't following through on any of it. I have lost 26 lbs and still have 25 lbs to go before hitting prepg weight but still want to loose another 40 lbs. How did you get started and found the energy to do it.?