Hi WonderJenny!
I second the walking suggestion.
What did you do last time you lost 30 pounds?
I am not sure about your particular situation, so ignore the following as appropriate.
Here are a couple of things I did last year when I started to take charge of my health:
1. I got a pedometer and tried to get 10,000 steps in a day. Some days I went over, and some under, but it was good motivation to move more.
2. I followed a structured eating plan based on the diabetic exchange list, even though I am not diabetic. Before that, I had been used to grazing all day on whatever I wanted, which led to obesity and poor choices.
Later, I reduced my carbs as my blood sugar levels adjusted and I learned to sit with hunger, realizing that the next meal was coming soon enough and that I wasn't going to pass out.
Wish you all the best. You can do it again!