How do I know if it’s intuition or just my mind talking smack?

Christmas Eve I was up working and playing until about 7:00am, then slept until noon when I decided to head out to the beach for a surf check.  I figured my sidekick would sleep hours longer, so I got ready and jumped in the car.  I thought, “I wonder if he’s up yet, should I ask him to go?” My mind said, “No, he’s asleep, he was up late.” My intuition stopped me at the corner in front of his house.  “At least tap lightly on the wall and give him the chance to come on my adventure.”  My mind told me, “He’s asleep, drive on.”  I pulled into his driveway and was preparing to put it in neutral to back out without the beeping sounds when he came out the front door, on his way over.  The question always is, “Am I listening to guidance or is that my mind talking smack? How do I know what is intuition and what is my mind pretending it knows what is what?