i wish you well on this upcoming life change, brackenbeard. i know i've felt the same as you when and even if the change was progress. having family members living with you can help you feel less insecure. the way i've viewed my life is there are sometimes challenges but as i went up the ladder to independence my confidence grew. there were emotional upheavals but none were as bad as i had assumed they would be. so try to look at this as a "promotion" and enjoy it for what it stands for.
your awareness of self...fear..anxiety etc is normal. change feels somewhat foreign at first. when i started rebuilding my life i was very anxious of living on my own. turns out it was wonderful. but it never hurts to be on our toes as long as we don't focus just on that instead of enjoying the journey.
i hope this may be helpful to you and hopeful too.
PS i forgpt to mention-purchase something for your new home. doesn't have to be expensive. just somethng that personalizes you new environment. i did that and felt so good inside as a result.