Wow...I guess I am pretty lucky. My beardie is super easy going. I handled him a lot in the year and a half since we have gotten him. I can holler across the room to say hello to him and he will tilt his head to listen to me. I talk to him all the time. He has never been aggressive so I don't have any advise. He used to be a tiny bit skiddish when I would reach in to rub his back and head but now he just doesn't care, I have done that a LOT. Every time I walk by his cage I talk to him and reach in to give him a pet.
I think the only thing I would give advise on is talking to your beardie a lot. Slowly reach in to either pet him/her or move slowly to pick him up. I would let him run around to catch his food. They need exercise too I think mine likes the hunt.
I hope he calms down for you.