have someone in the palm of one's hand
guide
take control
possess
wind
lord it over
self-control
monopolize
take the reins
dominate
hold sway
bigfoot
get by the balls
manipulate
take possession
take
mog
pick up
take command
show who's boss
keep in line
control
resign
obsess
take the wheel
hand over
carry weight
talk like a book
take over
have someone by the short and curlies
cut ice
override one's commission
win
add
govern
take the helm
marionette
puppeteer
have it on lock
rock someone's world
reconfide
underbring
have a handle on
have someone by the balls
entitle
walk all over
throw one's weight around
colonize
command