How to get over the fear that they’ll fight tooth and nail to take what I have?

So I’m finally at the point where I’m moving out and joining the army. I have my own place and I’m going to get my car with my basic money. I’m moving to another state and going to distance myself. I’m leaving in 4 months. I haven’t told them yet.

But I can’t get over this fear that they’ll find out and sabotage me. Or when I do leave, they’ll find a way to rope me back into their nonsense. It keeps me so tense these days that I can’t focus. I get so anxious and fearful about it.

Has anyone else been through this? How did you get over the fear?