I think im ready not sure though...

I think I'm ready but I'm not sure though or maybe I don't have enough motivation. I hate that I weigh 250 when I used to weigh 151. I'm barley gonna be 20 years old I hate having to weigh more than anyone else in my family. I want to be healthy not just get skinny. But I mean every time I try i stop since I have no motivation from my husband or anyone. My doctor gave a confirmation to start losing weight during pregnancy but I just don't know how to boost my energy or motivation. Idk if I can do it.