I am interested in how people function, how their minds work, personality types, etc. I myself am an INTP type and really love analyzing the actions of people and trying to figure them out.

But I'm doubting that there is a job that would just let you sit and stare at people and then pay you money if you understand their personality correctly. So I'm thinking, a psychiatrist? A psychologist? Is there anything else besides those two careers? Please try to be detailed in your suggestions. Thanks

Criminal Profiling. You can analyse the personalties that lead to particular offenders. Such as the type of personalties likely to be found in serial murderers etc. This can also be done in reverse where you will be given the circumstances of an offence and you need to work out the age, gender and personalty of the person likely to commit such offence. Very interesting work and takes into account an area you have both interest and ability.