How do you deal with being alone?

I'm trying to become stable again. Gonna save up and live on my own like an adult. I will be alone. I'm still getting over some stuff from the past. It won't be easy. My heart thumps just thinking about it.

I know it might be hard to imagine being afraid of being alone. Especially if you've never had that fear. I didn't before either. Experiences change you. I'm terrified.