College Senior on leave of absence. Need Advice.

Thank you for my viewing my post.

I"m just asking for some advice on what I should study. Briefly, I will introduce you to my current state of affairs.

This was supposed to the fall of my senior year of college. My courses became overwhelming, and I kind of half heartedly decided to take a leave of absence. Looking back, I definitely should have stayed.

I started off college as an industrial engineering major. Between January 2014 and January 2016, I bounced around between various engineering and business majors. The issue with this was that I never really got deeply into one major.

January 2016 came along and I decided I was going to become a doctor, so therefore I had to major in Biology. The spring semester of 2016 went pretty well and I earned excellent grades in all of my courses-- General Chemistry I , Introductory Biology 2, and Calc based physics (electricity & magnetism), all with labs.

Over the summer, I volunteered at a hospital near school and shadowed a lot of different doctors. Shadowing and volunteering definitely was a positive experience for me. I was able to learn a lot and understand what doctors do. Then, it was time again for school.

Assuming I would have a laser like focus all semester, I signed up for 5 different science classes which put me at a meager 18 credit hours. This was the first time I actually took an upper level biology course. Needless to say, I quickly became overwhelmed. I went in to talk to my adviser about dropping a course, and ended up dropping all of them.

Let me know if you have any other questions about my background. I really would appreciate some advice that would help me start doing things to improve my life in general.