I actually feel you on that Brooklyn. I come from a hispanic household and it's basically the same thing. Even now, I'm being taught to take whatever shit my family throws at me, but there comes a time where you snap dude. You have to set boundaries or you'll just get taken advantage of because parent's think they own you half of the time. Or at least, that's how it was in my experience. The way I snapped was not the healthiest and it completely broke my relationship with my mother. Now I'm just full of anger and bitterness. There's not even a hint of sadness in me anymore.
The people who knew me from two years ago on this site can tell I've been through a drastic change. Sure, I was probably better off not defying my mother- and I may or may not have cried for ruining the one thing I had left, but it was the only way. I tried to set boundaries the peaceful way, but when she wouldn't listen I had to yell and get physical, because enough was enough.
You're growing Brooklyn, into an adult. And as an adult you have to be willing to make sacrifices. No family, no friendship, nothing- should be put over your happiness, your health. Because when you do, it ends up fucking with your head.
And hey, maybe it's just me saying this because I literally have no one who cares left in my life, but it shouldn't matter if you end up messing your relationships up a little if it means that you will be safe and happy. You can always work to fix them over time, and besides, if they're your family or any relationship for that matter, they more than anyone should understand. If they don't and give you hell for it, then I'm sorry to say this but maybe they don't have your best interests in mind. Of course, when I say this I don't mean for miniscule things, I'm talking about having your own space when you need it without them interrupting, staying out of your stuff, and not forcing you to do things you don't want to do.
Standing up to your family is probably one of the most hardest things you will ever do. I know it was for me. There will be disagreements, there will most likely be yelling (if your parents are that type) and it might get physcial as well.
All in all, when too much oversteps boundaries you're not comfortable with you have to be willing to put your foot down. Sometimes you have to be firm in the way you say things or else they won't get the hint and keep doing the same things over and over again.
I may have just gone on a tangent that will probably mean absolutely nothing to you, but it all starts with family man. Once you're able to stand up to your family, you'll find it much easier to say "no" to some of the other things. But take my words with a grain of salt because half of the time I don't even know what I say.
Thank you @PsychedelicMind for the advice, I realize that there are times that saying No is really important and I'm trying to improve myself in that aspect. I do say that another thing that contributes to this is that I care more about other people than I care about myself. I've been trying to take care of myself more and I realize that learning to say No is a very important step forward. I've been trying to practice by saying No to people whenever they try and offer me a snack at BJ's, I think its been pretty successful so far, lol.