Our challenge to you is to:
The benefit of this approach is that you're making small long-term changes as you only pick items from the list that you're not already doing. And you're creating a support network to report in to each day to keep you focused and motivated. Plus it's a daily focus - even if you score a zero on one day, the next day you can start again.
Rather than making a number on a scale - your measurement is sticking to 3 healthy behaviour changes to create a habit. Once you're consistently sticking to one of your habits then change it out for a new one to progressively improve to a healthy lifestyle.
Feel free to contribute your ideas in your comments.