After spending almost one year on this site, I've realized that my knowledge of mathematics is not deep enough. I love mathematics, i mean I am obsessed with it. I have a masters degree in mathematics from a reputed university in India and now I want to pursue PhD in this subject. It's been one year since completion of masters degree and I am unable to find a place in any university for PhD (I failed at couple of entrances). So my question is, is my love and passion for this subject will help me to do research or to do research in mathematics one need an unusual brain? By unusual I mean who can instantly catch the logic and solves a problem, which I can't. I am slow. So I need some advice on this? How should I prepare myself? Thanks.
Edit: By this question, I am not asking about which career I should choose. I know I want to do PhD. What I am asking is, "How one should prepare before starting a PhD?" What are the basic points I should be working on? Simply just reading many things would not help I guess. So if this question can be reopened and some one give me a pointer then it would be helpful.