Need some encouragement

Last night, I told SO I'm done. I used those words "I'm done."

I'm really scared about what's next. I just need some encouragement I guess.

She reacted with tears and even texted me saying she is "groveling at my feet" and i feel horrible about that. But I asked her why now? Why not all the other times we talked over the years. She's known this is my only concern I ever bring up. Why now? She said "because you've never asserted yourself this way before."

It hurts.

I'm scared.

It feels like the right thing to do. I have no doubt about that.