Hello everyone. So as the title suggests, I am really concerned about my intelligence and/or math(s) potential. I'll explain in just a minute, but first allow me to say that any response or advice from you guys will be greatly appreciated, as basically I started to question my whole life and I just feel hopeless about it. So ever since primary school, I quite enjoyed math classes. They were great deal of fun and usually paying attention at them was enough for me to understand the topic and get a good grade afterwards. I didn't do any competitions though - I just didn't find them interesting at the time. Things continued to be the same on high school, but there was an issue - the high school itself. The quality and amount of math classes was ridiculous, but honestly, I wasn't aware at the time. It wasn't until my senior year (I am from Europe, so equivalent) before it struck me - I had to do something about my life and my future career. I somehow decided that I actually want to go to a university, but not just that - abroad, in the UK. So I did a little research and at first, I was looking at like top30. After some time, I shifted my focus on top10 and I ended up applying even to Oxford. But once I saw their admission test - 2 months before the real thing - I realized just how terribly behind I was with my math knowledge. So I went to our high school principal and asked for a break. I bought myself British textbooks and I just studied everything from scratch. I spent 8 hours a day for 2 months doing that, and let me tell you, I loved it. I ended up getting rejected by Oxford before the interview stage, but I got offers from Warwick, St. Andrews, Bristol and Edinburgh and I eventually fulfilled them by graduating with straight As. Thing is, I still kinda suck at math. I understand each topic I studied thoroughly, but I just lack the real "talent" to solve a bit more challenging problems, like those on Oxford's MAT (Link to a paper from their website). I see some of those questions and I just feel like crying. I think the issue is that I learned everything by myself, kind of "mechanically", and now I feel desperate because well, I can't just go back. I can now also clearly see how much it hurts me not to have any experience with competitive math, because I guess my mind wasn't guided to "think outside of the box". Or even worse, I just don't have the brain power to be able to cope with these math challenges... Is there anything I can do about this? Is there still a way how to develop this "6th sense"? Thank you for any answer.