What are the various ways by which one can stay active in the day to help fight obesity?

Here are the following ways by which one can stay physically fit and avoid weight again:
1. Get atleast 10000 steps a day. This can be done by walking up and down the stairs when the opportunity arises, going for a walk during the day and maybe even walking around the house.
2. Reduce consumption of processed foods like sugar, starch etc. Eating plenty of green vegetables and fruits has a lot of health benefits.
3. Find a workout type thay excites you like rhumba, or running. Going to the gym and doing some boring workout will not be sustainable in the long term