Constantly on edge

I am constantly on edge. I am stressed and frustrated beyond belief.

I live with people that yell at me, give me evil looks, ignore me, and only talk to me when I have done something wrong. They treat my kids better than me. If I drop a piece of dust they hear it and I get yelled at!!

If I accidentally make a noise I get tense and sign and just want to disappear because I feel like they will yell at me like a child. I am almost 50 going on 10.
I have a stressful job and am constantly under time constraints. I avoid people just so I can get things donE. I am also around alot of people and I hate having them look at me! I want to disappear.
I just want to be left alone and be in quietness. I am completely in noise. noise to drown out people I live with, noise at work. blasting music in car. too much on my mind. kids frustrate me because they wont do their homework but are very smart. could have A's but is failing. they treat me like crap also

Living with other people (parents?) is hard. It doesn't work unless the parties have a sit down and communicate what one and the other expects. Ask these people, "What do you expect of me?" and tell them what you are willing to do in return. Similarly they should ask you what you expect of them. Yes, tough conversation to have but necessary.

As for the noise. Have you thought of a noise generator?

I have to have fans and purifiers on in my bedroom at all times to block out the noise of them. I can't listen to them.

Perhaps then a sound generator or sound cancellation device would work. The first can be rather soothing. I don't care for the latter as I need some sound in my life. I'm not sure how they work but have heard some good things.