Trying to master the Ezafe: Is it always this tricky in spoken Persian?

I’ve been studying grammar rules for three months, but the Ezafe keeps tripping me up in my sentences. I’m trying to move beyond basic vocabulary and start stringing complex ideas together. Are there any specific drills or rules of thumb for when the Ezafe sound shifts in casual speech? I need a way to wrap my head around this before I start practicing with a tutor on Chickytutor.com to fix my output.