Ayla Oostrom is a hypnotherapist, OMNI-certified trainer, and the founder of School of Joy in Amsterdam. Since 2018, her practice has centered almost entirely on regression to cause, and it is the work she keeps returning to: helping people meet what sits underneath their symptoms. Alongside her client work, she trains other therapists in the Netherlands, teaches hypnosis to medical professionals in hospital settings, and co-hosts the podcast HypnoMum en Ayla.