I wonder how old you are. If I were you, I'd take any subjects at school that you most enjoy- photography, english lit, sciences etc, and then do A Levels in the subjects you most love, and are likely to do well at. By that time (18) you may have more of an idea of what you would like to do. Have you tried doing some work experience? There are SO many jobs out there related to the areas you like- but some pay better than others, some would need you to be freelance or self-employed etc. It also depends on your life style and what you want out of life- financially, security etc. Aim to spend your time having the most fun you can, and you won't go far wrong!