How Littlefinger Controls The Game of Thrones

He never convinces anyone of anything. 
He influences people to act without them realizing it. 
He always leaves the final decision up to them.
He never shows outward animosity towards people who slight him.
People don't actually want to be in charge.  They want to feel like they are in charge.  And they want other to recognize them.

Prioritizing your ego and receiving respect will come at the cost of achieving your true goals.