Can i become mental health worker?

I am currently looking to earn some extra money but would like to do something that relates to what i do already. i would like to work in a mental health unit part time, evenings and weekends. i have a levels english, law and psychology. a degree in psychology/criminology. i currently work as an assistant psychologist for the prison service and as well as report writing and carrying out risk assessments i teach enhanced thinking skills.
Answer
Go for it. i hope you really enjoy it when you get there.