Some mediums are born with the ability. Others acquire the skill in childhood or as an adult, sometimes recognising the skill after contact with another medium. Often a medium will have had hardship or trauma in their life as part of their own spiritual development.
you can train your ability to be a medium if you have a natural talent. But although we all have some degree of psychic powers,not all of us have the ability to be a medium.

Are you a medium.

Inherited ability from a person, parent,grandparent who was a medium.

other mediums say you have the ability to be a medium.

You frequently hear voices internally or externally calling out to you or talking to you.

You see milky white mists.

You feel as if you are being touched by cold hands.

You attract paranormal activity around you.

You frequently see spirit around you at night.