Your diploma does not come with a guarantee for a great job. That is something you will have to secure on your own. Seek work you love. You will be spending the greater portion of your life working. Make it an enjoyable experience.
Happiness is priceless.
Extracurricular activities count. Whether a club or athletics, it shows you are a well rounded person. And it may be your best opportunity to exhibit leadership skills. Experience is experience. You gain new experiences every day.