I committed a grave error four years ago, I cannot exactly tell what is about, but is something that I must never do. My sister had already done the same thing before me, but no one had a knowledge about it. Then, last year she confessed and everybody got disappointed with her, except me, who got surprise that she had the bravery to do that.
I stay four years with this heavy load on me and I cannot bear with this anymore, I almost committed suicide two times and my hard regrets can't go away from me. I cried so much for this and now I can't even sleep anymore. This will be so frustrating for all my family and friends, but I need to tell them, I need to take out all this heavy load from inside of me but I don't know how! I'm desperate and please forgive me if this is too broad, but I really can't say what I've done.
So how can I tell them what I've done despite my low communication skill and my non-bravery and fear?
Some informations: I'm an 18 years old girl, my sister is 22. I'm autistic.
Edit: I confessed them yesterday and it went well. Thank you guys.