What am I gonna do?

Im due to finish Yr12 in 3-4 weeks and I still have NO idea what im going to do next year or the rest of my life.

Ive tried Mechanics, loved it but im not sure if I could cut a full apprenticeship and work as one for the rest of my life plus ive been given advice to not get into it by a cousin who went through it all (and was very good at it) and is now an accountant and loving it.

I like Electronics and all that, but my intelligence level doesnt allow me to do something worthwhile in the industry.

What I want to know is some decent jobs/careers with involve alot of hands on and spacial thinking (mechanic like).