Horan suffered a panic attack in December after getting trapped in a lift with a group of young fans in a hotel in Milan, and he is now allegedly keen to find ways to deal with his nerves, reported Contactmusic.
"Niall really wants to conquer this problem once and for all. He's essentially practising amateur psychology at the moment and is getting through three books a week. The self-help books are teaching him how to manage crowds with various coping techniques. He has stacks of them by his bed and they're really making a difference to his state of mind," a source said.