I'll just reinforce what's already been said in my own little way.

Let's see; he's told you you don't know what you're talking about, you don't deserve to make a decent living, he get's mad when you tell him the truth. And you're giving this situation ANY thought at all? If he's a friend I'd hate to see what your enemies treat you like! Take a tip from Nancy Reagan.............Just say no!!! BTW, this IS the sugar coated version.