[header] How to change behavior [title] Set clear goals. [step] Make sure the behaviors you want to change are specific, measurable, and attainable. Give yourself some freedom in the goals you set. 
[substeps] 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.