I am disabled - both mental and physical chronic ill health, plus neurodiversity thrown in for fun. I have always wanted to work, so I've had no choice but to find something engaging that I enjoy enough to keep me at my desk. It wasn't an option to grind through - I would honestly never get through a day, let alone a week.
If I have been able to find the right career, I honestly believe it is possible for everyone. I also have really engaging hobbies - ie. I could do easily fill my time without employment - but I would not drop my day job as part of the overall equation.
There are so many reasons people don't enjoy their work, but the most common is that their workplace is unhappy for them. Colleagues might seem to be as happy as larry, but that doesn't mean it is right for you. First consider moving employer.and swapping for a better fit of culture. It isn't all same sh!t.
Then, if you know it will be same shit, consider a sideways move into something similar, and look for a more suitable employer. You know what you don't want when looking for a new employer.
After that, you may have to do some re/training as a lot of.people just aren't given the right skills to really thrive. Be creative here - I had to do an entire MSc to get myself in position, but it really doesn't always take something anywhere near so big. I run an online professional development community that allows people to get the skills their employer should be giving them, but isn't. It is a small monthly cost that allows people to unlock time and find easier success. It is an investment in feeling a whole load better and stronger. That is one example of the support that exists.
I just don't accept that you have to suck it up, because I couldn't just suck it up. It wasn't an option, and yet I was much more up against it than your average person. There is no reason why you should be looking at decades of misery that you just have to endure. You know you cannot just grind through this, so don't put up with it. Don't concentrate on how you're going to skip into work each day on a cloud of delight, but on how you are going to feel each Friday afternoon, and then each Sunday night (or whatever your equivalent might be). Satisfaction on Friday aftetnoon and positive anticipation of satisfaction on Sunday night should be your aim.
All you are going through is the realisation that something has to change. What that change needs to be means thinking through your options. But forcing yourself to contemplate going along as you are isn't one of your options. Don't accept the status quo - grinding through belongs to previous eras. Gen-Z is refusing to grind through, as they have no pot of gold at the end of their rainbows. Take a leaf and make some changes, big or small as required.