I had similar feelings of lack of talent when I was doing my higher maths/stats. Then I realized that I don't really love either; that realization prompted me to drop out and through a series of serendipitous events, I ended up learning computers. That is when I realized that I really love programming. And that ensured that I don't have any crushing disappointments with respect to the probable lack of my talent in programming; even though I am never going to be even close to being the best in the field, its fine - I just love it.