Check out this site on How to Get First Class Honours at:
http://anythingthatinterestsme.blogspot.sg/2010/05/how-to-get-first-class-honours-in.html
I agree with most of the points in the post. I actually read this post before I even graduated, and it motivated me a lot. Hope that you will find it motivational too.
Most importantly, do not be overly stressed out by your goals. Life is a marathon, not a sprint, university is just a small aspect of your entire life. Enjoy your studies while in university, and it is more useful to develop life long skills like independent learning, teamwork and time management skills.
Meanwhile, you may like to check out the following posts:
The Lesson of Grace in Teaching (Motivational Post about Learning and Teaching)
Singapore Maths Tuition 