I'm 19 years old and I go to a not so great (according to Macleans university rankings) university in Canada. I would like to make a transfer to Waterloo and then go to graduate school at Stanford or MIT. These are just some of the goals that I'd like to achieve in my academic career. I would just like to prove to myself that I have what it takes and I would like to be in that academic environment (Sorry if I worded it poorly).

At the moment I know I definitely am not trying as hard as I should..I don't remember the last time I engaged myself with hard problems or where to start. I've been feeling pretty lost in what I've wanted to do with my life so I just decided to follow Paul Grahams advice and just go with what gives me the most options (http://paulgraham.com/hs.html).

When it comes to learning new things or building off old concepts, I feel like I have a poor foundation and I just don't know where to start. How can build a great foundation where I can understand the concepts intuitively?

In short, how can I become smarter?