The stoics taught that if something could be taken from you by a force outside of your control then your ownership of it was fleeting and not total. Your house, your land, your TV, your family, your friends, your car… literally everything you claim as yours… can be taken from you by force, malice, or fate.
The notable exception is your life. Your physical, mental and emotional self is yours to build, control, shape, and direct until your last breath. This is the one thing you can and should be seeking utter and complete control over.