Soo. Need some motivation to start exercising.

I need and want to lose some weight but I can't motivate myself at all. My husband works all the time so he can't really be much of a motivator. Any ideas or tips for me?

Btw it's the doctor telling me I need to lose weight. I had surgery to remove my gallbladder and it turned out that my liver is huge and I need to get some fat off of it.