First Pruning Butcher?

So, first grow and first prune. Did I mess it all up by cutting off this on accident too lol? This is a different plant i can't seem to get a good pic of the one i messed up but i cut the main stalk and one of those things on the side. Will it grow back or is this death? Thank you.

Relax.....it'll be fine.

Im learning that pot plants are pretty tough. thank you.

The old FIM technique--Fuck I Missed!

I once dropped a light on a plant I'd been babying it's entire veg/life, broke several branches, split a main stem. Plant turned out to be one of best plants I've ever grow.