I'm a tad mentally unstable when im on my lonesome?

It sounds to me like instead of avoiding your negative feelings, you need to face them head on. Take this opportunity when you're alone to allow yourself to be sad. If you were betrayed by your own mother, you have the right to be sad, because that is a very hurtful thing. If you feel like perhaps you have not healed from whatever incident occurred after a reasonable amount of time, seek help.