My mom took my stuff
How do you feel about that?
I feel very bad about this, I tell you one thing I'm going to ruin her
Instead of planning revenge against your mother, you should ask for your property to be returned to you.
There is no fucking way I'm doing this, I'm going to ruin her life.
I don't know what the circumstances are, but trying to ruin your mother's life sounds like an extreme overreaction. She might have borrowed something without telling you, or didn't realize it was yours to begin with. If you just ask her to return it, you can fix your problem without having to resort to harming others.