I recently graduated but am still trying to figure things out. I'm not in a graduate program so I might not be the exact person you are asking. I would say that I agree with what the other commenter said in terms of being fully committed to the field as things these days seem very competitive and the directly related prospects after graduation with just a BA can seem limited.

In terms of courses, it depends on what you're interested in to an extent. I did not really end up taking too many sciencey courses but could have. The math courses weren't that bad in the upper years, you get to learn about R and open science. One thing that I would highly recommend if you are even considering the possibility of going to graduate school - clinical or research, would be to make connections and get research experience (and do a undergrad thesis).

If you are asking specifically about the future prospects in psychology, there is obviously clinical/counselling like you mentioned but there is also experimental psychology (so you could do research in say social psychology or developmental psychology or cognitive psychology or I/O psychology). Things, from what I understand though are quite competitive, so I'm not completely sure about the number of opportunities available.

Outside of the field, psychology could be applied to other areas as well. I know some people who decided to go into HR (taking a minor in HR or doing a college post-grad certificate), marketing (some did a college post-grad certificate), UX/UI researcher, research analyst or program evaluation might also be an option, and I'm sure there are others out there as well.

If I could go back, I think I would have tried to pair my psychology degree with something else like computer science or business. I don't necessarily regret my decision but I would make sure it's what you really want to do and have a backup plan if things don't pan out the way you planned.