Advice for someone very indecisive

I'm currently in my second semester of my alevels, and i'm still undecided on what to study after. I've been switching between law, medicine, psychology, environmental science and management. I didnt really know what to pick for my subjects but i ended up choosing bio, chem, math and computer science. I feel like i'm so behind because i'm really average at everything i do and i dont have a certain passion except to make an impact (sounds cliche, i know) but i just really want a degree that is always in demand and pays well. i'm second guessing taking medicine/law because i feel that it will ruin my work-life balance which i really value. does anyone know what degree i should take?

Hiya,
I'd say you know your own strengths. Law and medicine are quite different from eachother so what would be a better fit, this can help you come to terms with courses similar to that. I'd say psychology is a good mix in between. If you're more suited to stem, then I think radiography is a good profession to go into, with a 9-5 and stable.