I just recently graduated uni and I'm hoping to try and apply what I learned in my finance classes to paying off my student debt. The biggest surprise to me during my studies was the realization that it can often be better to invest money and earn interest than just use what you've currently got and try to clear debt. Specifically, I loved the idea of investing a large sum of money into an annuity and using future cash flows to help pay off debt. Unfortunately, all the examples we dealt with typically used interest rates between 10-12% which makes such an option a lot more feasible than the real world where my savings account earns 0.01% interest.
So I'm wondering if there really are investments (aside from stocks and such) that I can try to use to my advantage with help paying my loans? Or instead, is this approach unwise? And if so, why?