How do you tell when you don't want to do your course any more?

So I am currently in the second year of my physics degree and I honestly don't know if it's still what I want to do. I had to do a foundation year to get in, and during that year I was incredibly motivated and passionate about doing physics. I studied constantly and achieved grades of 90+ % in most of the modules, I "knew" that I wanted to do physics and it drove me.

Then in the first year of the actual degree I got really disillusioned, I made some dumb mistakes like partying too much in the first semester which meant I pretty much spent the whole year in a miserable state of catch-up. I had to resit two modules only just managing to bring my GPA up from a 2-2 to a 2-1. I told myself that the reason I was so disillusioned was because I was playing catch-up and that, when second year rolled around, I would be on top of everything and I'd enjoy physics again.

But I'm not sure I do. I got sick in the first week and I've caught back up with the work, however the labs and my quantum mechanics module are about the only two bits of the ocurse I enjoy at the moment. I never ever think about physics in my free time, it's like it doesn't exist. My friends all say it's healthy to have a range of interests, but I feel like I should at least think about the thing I "want to do for the rest of my life" at least sometimes? Most of my extra-curricular activities revolve around mental health volunteering and it's something that I actually actively think about even when I'm not doing it.

Now I'm starting to wonder if maybe I don't really want to do physics anymore and perhaps I should pursue a career in psychology or psychiatry or something else entirely. But I can't change what I'm doing based of ifs and maybes.

So I'm wondering, other people at uni, when you aren't sure what you want to do anymore how do you decide? What do you do to help you figure out what's an interest and what's a passion?

So I am currently in the second year of my physics degree and I honestly don't know if it's still what I want to do. I had to do a foundation year to get in, and during that year I was incredibly motivated and passionate about doing physics. I studied constantly and achieved grades of 90+ % in most of the modules, I "knew" that I wanted to do physics and it drove me.

Then in the first year of the actual degree I got really disillusioned, I made some dumb mistakes like partying too much in the first semester which meant I pretty much spent the whole year in a miserable state of catch-up. I had to resit two modules only just managing to bring my GPA up from a 2-2 to a 2-1. I told myself that the reason I was so disillusioned was because I was playing catch-up and that, when second year rolled around, I would be on top of everything and I'd enjoy physics again.

But I'm not sure I do. I got sick in the first week and I've caught back up with the work, however the labs and my quantum mechanics module are about the only two bits of the ocurse I enjoy at the moment. I never ever think about physics in my free time, it's like it doesn't exist. My friends all say it's healthy to have a range of interests, but I feel like I should at least think about the thing I "want to do for the rest of my life" at least sometimes? Most of my extra-curricular activities revolve around mental health volunteering and it's something that I actually actively think about even when I'm not doing it.

Now I'm starting to wonder if maybe I don't really want to do physics anymore and perhaps I should pursue a career in psychology or psychiatry or something else entirely. But I can't change what I'm doing based of ifs and maybes.

So I'm wondering, other people at uni, when you aren't sure what you want to do anymore how do you decide? What do you do to help you figure out what's an interest and what's a passion?