I'm offering an alternate to sociopath...

So yes I'm trying to help even though you somehow failed to see that.

In answer to your question "how can I be a bully...?" You pick on people smaller and weaker than you, why i don't know and neither do you, but that's the definition of a bully right there.

Since your behavior is clearly distressing have you sought therapy?

I am sure there's a much better chance for reform if you're a garden variety bully as opposed to someone with a personality disorder....