The speaker in the example says "Your mind's..." This means "Your mind is..."

"Is" can be contracted to "'s" on the end of a noun:

The refrigerator's broken.

Patty's nineteen now.

But the same form is also used to show that something belongs to a person or thing:

The refrigerator's handle is broken.

Patty's brother goes to my son's school.

English speakers have to figure out which way "'s" is being used based on the situation.

This phrase appears in these lessons: