I can boost my motivation by changing my sleep habits and taking a walk everyday after school and I will try to do something positive so that I have motivation to do my homework
The first step is realizing that you have a problem.
This step seems simple, but it's sometimes hard to admit. You can't help somebody that doesn't want to be helped.
OK so basically the best thing Karen can do is to keep her diet balanced and exercise regularly to keep an appropriate bmi.