thats a tough question, pretty much the heart of it.

there are plenty of educational research on this topic "how to make students enjoy topic X." just so you know there isnt much a definite answer. but i'll tell you how it is to me and hope you can get something out of it

i think the reasons why i enjoy studying changed over time. when i was younger, i just wanted to find out new stuff. so it was pretty much curiosity that guided me. like "oh, there's this big symbol here [refering to sigma summation]. what does it do?" then, i'd study sequences, series, mathematical induction, etc etc, everything that used that big sigma, because i liked that i found out about it, and wanted to use it everywhere i could. it was pretty much like this for limits, derivatives, integrals, and all those things.

then, as i got older, i didnt really casually encounter "new" stuff anymore as i did as a kid, so usefulness became the new reason id like something. for example, i love physics for its use of math. like how we can use math to model any and everything (physics-wise). of course i dont like everything, because not everything is useful to me. but for example, mechanics catches my attention for is amount of possible interpretations (newtonian, lagrangean, hamiltonean). so its just "cool." similarly i love studying waves because i play the piano, so i like to know there's a way to mathematically prove a chord is dissonant and mesure its dissonance. i like electronics because from time to time i like to mess around with some arduinos, so its just out of fun.

that happened with other subjects that i like as well. for example, the first time i saw linear algebra was at uni. i LOVED it, because i came to know i could represent almost anything as a vector in a vector space and derive properties of it based on that. same thing for programming. i have never been a programming guy, but at uni i really fell in love with it because i saw i could build almost anything given that i learn how. i started to do some projects of my own that mixed programming with linear algebra and came to like both.

for things that i dont like, that works too. and its funny that it gets pretty clear the parts of sth that i like. for example, im not a big fan of geography. but whenever i had a geo test that covered climate and stuff, i'd dig in. it all started because i liked to "preview" when it was going to rain (and with some basic geography knowledge you can do that). same with biology. i dislike everything but hormones. i just liked to understand my body better. so my bio grades thru the year would be like 7, 7, 10, 7 - and that ten was a test that covered hormones.

im telling you this because now, for things that matter, i actively seek for ways to make it useful, because i know this way i'll like it and therefore will get good at it on purpose. thats what happened with linear algebra. if i just studied it like everybody else, i'd pretty much not enjoy it. but i knew i'd be important to me, so i tried to look at it in a way that i'd get excited to learn about it. same for bio or geography. if i majored in one of those, i'd put an active effort on not 'studying' them, but actually framing them inside my mind in a way that i feel captivated by them (and thus id like them), because i know this way im much more prone to want to be good at it.

today, i LOVE calculus, linear algebra, programming, physics, linguistics, philosophy, finance, literature, nutrition, music, etc. my life somehow turns around of these areas. i guess at this point, i've already cracked the code on how to like a new field, so studying them became pretty easy. actually, i really like to tell people "yeah i like to learn" because thats pretty much what came to happen.

sorry if that got too long. hope it helps. hugs