Some people just like to bully others, and make them feel cheap and useless. That's not good at all; especially if you want to be a businessman. It's unfair when you do bad things to people who don't deserve it.
And you shouldn't be counted among people who mistreat others.
Why do you need to mistreat people? There probably isn't any logical reason why you should mistreat people; whether it's a stranger you just met, or an old acquaintance without any valid reason. Hence, you have no reason to.
Most people who mistreat others, tend to be one way or the other - transferring their anger in their personal life, on the people they mistreat. This means that when you're more peaceful with yourself, that's when you tend to extend such peace to those around you.
Meaning that it's very important that you release all your stored up anger on a boxing bag or gym, or on the cause of your anger; than to transfer it to everyone else. If you know that you cannot directly release your anger on what is annoying you, then you have to find a way to let go of that anger.
Perhaps, when you were younger, someone mistreated you. And now you're hurt, and angry at life and everything, so you lash out at people. This has no gain. Rather you should find a way to stop that hurt you're feeling. If you need to speak to someone who can help you let go of that anger; then very good.