How does the next paragraph end?

How to change behavior
Set clear goals.
Make sure the behaviors you want to change are specific, measurable, and attainable. Give yourself some freedom in the goals you set.
If you're trying to begin exercising for the first time, a reasonable goal might be to go for a 20-30 minute walk five days per week. This holds you accountable to walk more throughout the week, but is more gives you some wiggle room if something gets in your way.