

First—wow. You’re living an incredibly full life. You’re meeting the situation you’re in by working two jobs; looking toward the future with the university degree. You have an admirably balanced portfolio of purposeful avocational activities to meet spiritual, physical and social needs. You’ve thought out and researched how mind and body work.
But I find myself wondering: “But when do you dream?” I’m not referring to sleep-dreaming. Rather, I’m thinking of something more like meditation—where the mind is either not engaged in purposeful activitiy, or is engaged in activity that is so rote, so engrained as automatic, that the subconscious is free to make its own associations that (for lack of a better descriptor) allow it to connect the dots from what seem to be disparate experiences.
I’m a (retired) academic. You mention you’re progressing further in university studies. You don’t describe it as onerous in terms of literal time commitments: absorbing material, completing tasks that assess subject mastery.
My experience has been that intensive intellectual processing seems to drain some sort of subconscious reservoir, which then demands to be replenished. If I do not give this process its due, eventually I become a gibbering idiot; for lack of a better term, I think of it as “brain-lock.” If I try to push through, I make stupid mistakes. Like the day I woke up, cleaned my contact lenses like I had done for some 20 years, and tried to pop them in my eyes using the soap solution instead of the wetting solution. I burned my eyes so badly I had to take the day off. (No long-term harm—just serious ouch.)
Another consideration: You don’t say how old you are; some details you mention suggest you’re beyond early 20s. Specifics aren’t particularly important. I’m old enough to be retired. So here’s the point: as we age, the balance of body-mind-spirit components we need will change. I find that I need more “free-range” mental/emotional time to recover from stressful situations. Perhaps that is also so for you.
I don’t know what components you may want or need to shift in your schedule. But since you’ve asked what’s going on, I’ve offered my best guess on what you might need to assemble your own answer.
Paying someone a simple, spur of the moment compliment, when they seem pretty happy already—and then realizing from the expression on the recipient’s face that it really meant a whole lot more to them than you thought it would.
And to hear those children laughing, and a bunch of other stuff to cheer you up: https://www.peptoc.net/hotline. (Free “warm line” with pre-recorded messages—from kids!)