All humans are dangerous.
Most all aspies have meltdowns.
Figure out how to best cope with specific stressors, individually one at a time.
Get a special interest.
Other than that, life sucks.
There is no official prevention, only punishment.
The only way into a nuthouse forever is to do something really nutty.
And then it's only a "maybe," most likely prison forever.
I've been where you are, it sucks hard, my only answer is the bottom of my sig below.
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(14.01.b) cogito ergo sum confusus