All power struggles are all about locus of control.
Never forget that yours is strongest when your position is dead-center of your own “sphere of influence”, such as it is.
So when you find yourself caught in the middle of a power struggle, note carefully in the center of whose sphere you happen to currently be standing. And if it is not your own, review your strategy one more time before you consider flexing any muscles or exerting any effort.
There will be times when this shift in perspective is all that you require to shift the balance of power in your favour. Think about it.