Paul,
Well done on your hard work...
But, I know how you feel about the lacking a life changing event in your exam results. I'm a man of free will and yet there's a part of my psyche that actually likes to get a curveball now and then. I enjoy that life is like poker, sometimes a good hand turns up and sometimes a bad one. If it's all middle of the road then there's too many choices.
Bizarre as it may sound, sometimes I need for my life to go out of my control - to be shaped by fate or a factor I have no hand in.
When I got my GCSEs I got nine equal grades. Regardless of the level achieved the 'cards' were middling. I didn't excel in any one area and so couldn't really make any choices based on it. Had I got an A in maths and physics and seven Ds I'm pretty sure I'd be typing this as an astrophysicist but, at it was, I had no external shaping of my life going on, and it was left for me to decide which branch to take from a load of equal paths.
That kind of continued through college and finally to uni where I studied a somewhat middle of the road subject, mixing engineering and business but gathering rather an unuseful amount of either. This led to a mundane centre-field career path, and turned out to be one which I don't find remotely interesting, despite being one in which I'm more than capable.
So now, just shy of thirty, I'm finally going the way of my heart. I'm going to do something I should always have done. If I fail then at least I tried but, provided I get the chance to succeed, then failure is not even an option.
The curveball that instigated all this was when my last employer became insolvent. Instead of getting right back into a new full time job I took some time out to think. There'll be plenty of opportunity for you to think - the rest of your life in fact.
Take solace in that your degree has a defined path. It may be a path that seems constrictive but it won't necessarily turn out that way. My degree was just a piece of paper. Yours is knowledge. That's gold, even if you decide not to take a career in that line.
OK, you didn't really want my life story!.... just keep on keeping on, and if you really feel like you don't want to and you must leave uni then that's possibly just a curveball coming your way. In that eventuality, hit back with all you've got and you can't lose.