What are the best/worst things to go to school for?

I took a few career tests and these are the occupations that interest me: Accounting (Including payroll, billing, and entry/mid-level accounting.) Medical Assistant Cosmetology Licensed Practical Nurse Teacher Police Officer Dental Hygienist Psychologist I'm not really sure what direction to take in my career... show more I took a few career tests and these are the occupations that interest me:

Accounting (Including payroll, billing, and entry/mid-level accounting.)
Medical Assistant
Cosmetology
Licensed Practical Nurse
Teacher
Police Officer
Dental Hygienist
Psychologist

I'm not really sure what direction to take in my career and was looking for some insight. I don't know if it's better to aim for a bachelor's degree or just consider jobs that only require 1-2 years. I'm 22, live with my parents, and work 30 hours/week as a cashier.
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