Good for you for wanting to improve your health. I have a huge problem with motivation. I can literally wait months for that feeling of wanting to do something and it never comes. I’m finally at the point where I know I have to just do it. I make myself stand up. Then walk into another room. Then I forget why I stood up and go sit back down. But I don’t let myself off the hook. I stand back up and wander around until I figure out what it is that I wanted to do. It sounds rather tedious and silly, but at least I get some exercise while I’m meandering around in a fog.