I know how you feel -- not totally, obviously, but. There've been times when I interacted with someone (online or in person), and then walked away and thought about how awkward, how stupid, and a lot of times, how hurtful I probably was with what I said. I resolve to keep that in mind next time and do better. And yet. The cycle continues.
And, just so you know: even if you don't love yourself right now, we do, I can assure you.