What is it like living with an unknown genetic condition?
Amy-Claire Davies has an unknown genetic condition which leaves her with potentially fatal agonising spasms.
But the 24-year-old, who was not expected to live past childhood, has chosen to dream of a bright future focussing on her family, friends, boyfriend and hobbies.
Ms Davies said she is one of a "new generation" of people who are still alive in adulthood thanks to medical advances, despite having terminal illnesses.
"My world is full of love. I have hopes and dreams for an incredible future," she said.
Watch the Incurable Optimist on BBC One Wales at 22:40 GMT on Monday, 25 February - and on BBC iPlayer.