Had a bad experience months ago and I'm afraid it may happen again

Hi everyone, hope you're having a good day.

As the title says, some months ago, I had a bad experience related to some personal issues:

>After my parents' divorce, we had to move to a house in bad conditions and humidity around the walls and ceiling, we haven't been able to move from there even though we have looked for a new house during years, and it's very frustrating for me knowing I'm the youngest one in the house and can't access a stable job to help economically.

>I'm not really sure if this is a major part of it, but as I have Asperger's Syndrome, most of the things I do and say are easily misunderstood, making people very mad at me when I'm not trying to cause any problem, and that includes my family, it hurts me seeing them mad at me when I have no intentions to cause them any problem.

>Last semester, I failed a subject and that made me feel bad knowing that I can actually understand the topic, but it seemed to end up wrong, making me realize that nothing I do ends up right, no matter if I understand or try.

After all of these things, a few months ago, I ended up taking an overdose of pills (Sertraline, to be exact), that caused me a tachycardia and I was taken to a hospital because of that, I couldn't use my phone and had to stay in a room all alone (Except for when a nurse had to take a blood test from me or when I said I needed to pee) for almost a week. After all that, I realized that, no matter what happens, no situation deserves this kind of measurements and that it's very painful for beloved people to see a loved one like this. I learned a very important lesson, but after a few months, the situations I mentioned before keep recalling (We can't move, I'm afraid to fail again in class and my family sometimes get mad at me after misunderstanding some things I day accidentaly) I don't want to go through all of this again (Or even ending up worse) but still can't keep calm, I remember saying that I musn't die, but I don't want to live like this either, I don't know what to do, and I need your help and/or advice with these situations. For taking your time to read this, thank you very much, and I hope you can do great, whoever is reading this