A Hostage Situation
You're holding your brain hostage because someone's acting like they're the boss of your thoughts, and they're doing it for no good reason.
My teacher acts like she's the boss of my brain and expects me to think good thoughts all the time.
My boss holds my brain hostage every Monday because he thinks I should be happy to be alive.
My sister holds my brain hostage every time she starts a new phase of her life.