You are not taking responsibility for your own behaviours and you explain these away as others 'making you do it'. Your attitude is also creating a pretty aggressive work environment (yelling, 'taking it out' on your colleagues and being pushy) towards your colleagues. And you rationalise your behaviours and attitude as being because of one human being i.e. your GM.

So yes, you are placing too much focus on another and it is having detrimental effects in your daily life, in your relationships and on your mental and emotional state.

Focus on yourself and on getting your life in order first.