I'm way over 18 (44 to be exact), but I'm posting here because I was living alone, and stuck in a bad spot when I was 17. My mother had a debilitating stroke when I was 17, and my father died a year before that. I had an aunt who lived with us, but she was working and did her own thing, and basically I was living alone as far as housework, shopping, home maintenance, etc. I did OK with all of it except the money. I was too immature to handle that so well, and luckily my aunt took that over and made a better situation for us that way.
I guess if I hadn't been forced into an independent lifestyle instantly at 17, I'd have done better waiting awhile at home, and been able to work awhile and put some money away first. So that's basically what I'd tell anyone here now. Don't be in a hurry to get out of the house, unless of course you're in an abusive situation, in which case you should get out YESTERDAY. Otherwise, take it slow and easy, and maybe even make an agreement to rent and pay for your room formally from your parents, and live like it was an apartment, and that way you'll be 100% ready when you do move out. If your mother does laundry, pay her like you would a housekeeper, etc. Not only will that show a lot of respect to your parents, it will give you the skills that I did not have, when the real world comes down on you.
Charles