Moving from training into GA is a natural progression for most pilots. Unfotunatly a lot of pilots,be it with 150 or 250hr's, bring a "what can my employer do for me" attitude with them. This just doesn't wash with a small business owner. These type of people are really going nowhere. They take that attitude everywhere they go right up to the left hand seat of a commercial jet.
So your boss is an arsehole? Big deal. He probably got that way from constantly dealing with staff who waste his time and ultimatly cost him money.
Turn up every day thinking
"how can I make more money for the boss" and you're laughing.
Remember,the more money he makes the more you do.