Another way of looking at usage of psychology:

1. In assessment and treatment of mental health problems, in some kind of therapeutic role
2. Counseling role
3. In school settings
4. In industrial and organizational settings : HR roles 
5. Social outfits like old age homes, rehabilitation centers 
6. Sports : To improve team work may be 
7. Health : To promote a better lifestyle
8. In media
9. In forensic analysis and other aspects of law