Psychology

There are many different aspects of psychology. They span in many different directions, and can be divided into many different fields. So in brainstorming for this assignment I have formulated a few questions to help shed some light on this intense and curious subject.
What would drive someone to go into the field of Psychology, and what makes them decide which branch of it to study?
What are some of the most common challenges of a pyschologist both academically and in the field? How many new studies in psychology are done each year? Who are the most common patients for a pyschologist? When do pyschologists retire? Where do most of a pyschologists studies occur?
These are but a few of the many questions about pyschology. I'd like to try and identify one of these and work with it