This is just general advise. I'm 24 yrs old; when I did my AS's back in 2004 I was like you, not really ready for the jump. I had the same, not committed attitude that I had in GCSE. Needless to say I got a overall C, D and a U at the end of the year. Even though this was all happening I was more interested in doing overtime in my evening job. I never revised, like in my life. I just assumed that I would walz into uni. It wasnt until I was forced to move and abandon education, that i realised what a mistake I had made. I am now in my final week of exams (next week) doing an Access to HE diploma; and I must say that education is now my number 1 priority. I am restricted on the uni i can go to as i now have 2 small children, so cant go to 'the best' but the time off has allowed me to re-evaluate. I now have the equivelant of all A's in all of my modules and can honestly say I have better marks and more understanding than i had first time round. If i had got into uni back in 2005, i wouldnt of been able to cope and might have dropped out. Btw, a girl on my course was accepted to do biomedical science, so it is possible that even if you dont get in with your A-levels to go down the mature student route. Obviously try this time round, but if mistakes happen, its not your only chance. Best of luck. And please dont work while doing school, its much too hard at this time in your life, that was my mistake.