Know that fights with your parents are going to happen
My mom and dad still think of me as a kid, just like yours do. They’re not particularly overbearing in general, but once I was under their roof again (which they've reminded me of, many, many times) things got messy.
There is no worse feeling than being a grown-ass adult whose mother yells at you to clean your goddamned room, or because you stayed out too late. They’ll get on you about big things, too: pressuring you to go back to school, get a better job, find yourself a serious relationship, and get some direction in life.
Make a plan
If you’re embarrassed about living at home (I am) and it’s not working for whatever reasons (it is not), you need to think about why you’re there and what your next step is. Hell, use the shame and strife as impetus to get your ass in gear. But be smart about it.
Assuming you want to move out at least sooner rather than later (good idea!), there are things to consider. From a purely financial standpoint, you’ll (hopefully) never have this savings opportunity again: even though you still have bills, you can save virtually all the money you take in. It’s pretty stupid to leave before you have a sizable nest egg. Friend-wise, anyone who's bailed since you moved back home isn't worth reconnecting with.