Something that worked for me was doing one thing, just one, that I did not want to do each day. It could be folding a load of laundry, calling to make an appointment, or doing some aerobics.
It counted even if it was something that needed doing. It counted if it took only one minute. It counted if I ended up enjoying it or finding it satisfying. It just had to be one thing I didn't feel like doing, and I had to decide before I did it. (So, no fair looking back earlier in the day, and saying later, "I washed my breakfast dishes, so that's today's thing." It has to be, "I don't feel like washing those dishes, but I'm going to go over there right now and do it anyway.")
After a few months, I had a lot of things done, and was in the habit of getting at least one thing done, and it was a lot easier. It was a small change, too, not a huge torque to my natural style or current habits, so it wasn't a failure like my attempts at big changes usually are.