How do I keep myself sane in all this?

Want to start my own business. However it’s not what you think. It’s mostly to help my mom, older sister, dad, and older brother out. Parents divorced, and we lost our house because of it. Due to a lot of bad decision making in my parent’s lives. My dad literally lives in his car now while working gigs. He’s so old now. It’s sad watching him be homeless and working, when he should be retiring. Got a house because I wanted to give my family a house again. I been working so freaking hard to give my family that house. I saved every penny I could. I even starved myself to get it. We’re barely getting by. Mom can no longer work because of her health. She has severe arthritis. And she literally has no money except that tiny check she gets from social security. But it’s not enough for her to live on. So she has to stay with me. Dad can’t stay in my house because he told me he doesn’t want problems with my mom. He rather be homeless. My older sister suffers from depression. It was so bad that she went 7 years without working. Stayed in her room for 7 years straight. And now that she’s better, she started to work again at last. But I cry for her because she literally feels like there’s no hope in anything. She’s getting older, and she feels like a failure. She doesn’t make hardly anything in this economy. And her job doesn’t even give her enough to get her own place. So my older sister and mom live with me. My older brother abandoned us, and went to college on scholarships. But he hasn’t found a job in his field of study. He also suffers from depression and anxiety. So he’s been trying to find a good place to live. So he goes from city to city to find his internal happiness. He doesn’t make anything either. Just enough for rent and food. He literally has no money for anything else. I feel like deep inside, he’s trying to escape his problems, and that includes us as well. I feel like I’m alone in this world. Trying to make it, so I can give my family the life I wish they had.

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I thought of ending my life plenty of times. And I cry from time to time because of the stress I’m in. I just want to make my family feel like there’s hope again. I want to be able to get them out of poverty. And I know I can do it if I start my own small business. And expand from there
How do I keep myself sane in all this?
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