There's nothing new in what you did. What you need to do is stop obsessing using pejorative language to describe your situation.

Ummm, that was quite a "slip"! Seems like you were just tired of maintaining a facade.

Congratulations, that must have been a really big decision for you to be able to express your true self to them.

Take some time to recenter yourself. Going through a change (like losing loved ones, changing how you identify) can be turbulent at first. Be patient with yourself and give yourself space to explore and reflect on who you are inside. It's really exciting that you are ready to embrace your true self and share it with the world; the world needs more authentic people who are willing to love themselves for who they are.

Do you have a cute girl friend yet? 🥳 People overlook a multitude of sins over that.

Get out and meet new people; make new relationships. See if there's an opening in the bowling leagues.

The world is full of so many things, we ought to be happy as kings.

It’s so hard when you are trapped in a false narrative. You give up on it and all that energy you used to focus on it needs somewhere to go. Best advice, think of the people you truly admire and enjoy, and why. Then be those things in other people’s lives.

I agree with the comment of Earnest Eccentric.
The only thing I would add, is that you should get a note pad or spiral notebook, (very cheap right now, at any supermarket) and some ink pens, and simply write yourself a checklist, things you want to do, every day.
Make a new checklist every day.
I am retired, and I need my daily checklist, to avoid feeling depressed.
You can write, "Call the community college," on your checklist, right away.
If you do your own dishes, if you do your own laundry, you can put those things on your checklist.
Another name for this, is called, keeping a journal.
Ben Franklin used to do this, back in 1750 or thereabouts.
He called it his little book.
Here is a link to an extra fancy day planner, if you truly want to get into it:

[passionplanner.com]

Ah, the "now what?" feeling. I get that feeling after getting a job offer, or getting an acceptance letter, or even a girl's number! Now what? Lol.

Well follow your dreams. Still be the best daughter, sister, relative you can be. Do you best to avoid arguments or diffuse them quickly. The best response is to smile and thank them for being so concerned about you.

When I decided to stop being private about my agnosticism and or atheism, i didn't actually "come out" in any big way or burn bridges. Instead I did little things. I stopped say words typically associated with religion (god damn it, hell, god bless you, godspeed, jesus, merry christmas etc.) I wasnt really against the idea of a god, but more against the indoctrinated culture and language that perpetuated it and I didnt want to think and behave using those thoughts and ideas. I stopped celebrating all holidays except for those honouring scientists and American founders and events. If I was invited to temple, i'd say "I have work, but do go ahead with out me", and so on. If god comes up in convo, i usually stir the conv away unless it was specifically about belief...and I'd lead it with "I'm not sure if any of it is true." Etc.

You will have to decide how you want to express your atheism.

Your being lesbian on the other hand, is out of my wheelhouse) I have no useful advice to offer other than be yourself. That's the whole reason you came out, I hope. To be free and happy and not hiding all the time. The stress of getting found out is gone. Now enjoy life and just be youself.

I am probably considered an apostate by the christians I once identified with, though they wouldn't use the term if I asked them about it. I'm still trying to free myself from the christians worldview, and it's hard with schizoaffective disorder that I got after being initiated into it, but as a free thinker I have the power to choose what is important and meaningful in my life. I want to change my life, and I have the choice. Meaning, what's important, etc is chosen and not bestowed

Rebuild on a solid foundation.

And well done, it's not an easy move.

Congrats! Lots of good comments already. Just to respond to some of your points, you do not need to be someone else, nor touch up or even wear a metaphorical mask.(please do wear a literal one when needed,) Mostly you need to be patient with yourself. Your life is in transition. It naturally feels a little disorienting. But I know personally, both in my queer identity and in my secular humanist outlook, it feels SO GOOD to live honestly and unapologetically. After many years of hiding and sidestepping personal topics, you now need and deserve assertiveness skills. Those also take a little time, some practice and repetition to feel comfortable.

My important go-to values for a fulfilling life: integrity, embrace of curiosity about self and the world---aka a love of learning, some sort of forging of bonds of love and friendship(even puppies count, lol), a sense of humor, and acceptance/forgiveness of flaws in oneself and others.
Again, practice patience with yourself in all these pursuits.

I wish you well and I agree with Owlinasack's last sentence.