Careers advice was not very good. I wanted to be a policeman but, for reasons I can't remember, I was told I couldn't (it was either eyesight, height or shortage of recruiting centres I think). Basically I enjoyed PE and did Sport Studies at A-level, which was the only subject I passed. I then went to Uni hoping that I'd magically secure a dream job afterwards. Fast forward 17 years and I'm sat at a desk forwarding e-mails all day.
We were all told that the best option was to get a degree, but I really wish someone would have actually asked me what I love doing and tried to give me options based on that, rather than this "go to Uni" rubbish which of course has now backfired. Granted, many people have made good use of their degrees, but I really don't think it's a good choice unless you are sure what you want to do.