Due to experience in a variety of industries
I would choose something that will not be done by a robot in the future (think of self service supermarket checkouts, driver less cars, drones)
I would choose something that will not get out sourced to another cheaper country (think of many office skills like IT, HR, factory production work)
In that case I would suggest something hands on and locally based; nursing/health, beauty/hair dressing, arts, vet, police, forces, M15, Engineering, trade like gardening, plumbing, electrician, decorator, builder, mechanic, local government, charity, zoo keeper, entertainer, catering
I would suggest some volunteering and part time work to try out some of the above
If you find work that you enjoy/love that is a bonus
What new jobs have been created with new technology and what new ones will appear in the future ? blogger, social media communicator, wedding hash tag planner