This will be a semi-rant about my miseries at life but mostly I'm looking for some useful advice. If you read this and write some useful comments I'll be very grateful. Guys, I'm so desperate to be better at physics but I feel like I keep failing. My story: I did A levels in the UK (it's like the last 2 years of high school before going to university) I did Maths, Further Maths, Chemistry. I wanted to be a chemist and I applied for the Oxford Chemistry course and I got an offer for it. Then I realised I wanted to do Physics instead because it has more maths in it and I prefer theory a lot more than experiments. However, I knew 0 physics, and in 4 months I learnt the 2-year course A level material in Physics having absolutely no knowledge before. My tutors let me do Physics at Oxford in the end, but I kept feeling inferior compared to other people. I got 60% at the end of my first year for the exams, and 60% was the average of that year. I got 69% on average at the end of my 2nd year which is above the 65% scaled average, so there's some improvement, but I worked so crazy hard and compared to that other people worked less and got better grades than I did. I'm really losing my motivation seeing that. I just feel like I don't understand a lot of principles of physics properly, and today we were doing homework together and some really "obvious" and basic things didn't occur to me that immediately occurred to other people. I'm slow at understanding everything and I feel so stupid. For months and months now I feel like I should just give up wanting to be a theoretical physicist because I suck. I've even seen counsellors but they're unhelpful, I can't afford good enough private tutors, I've tried studying with others but I'm a burden for them and that makes me feel even worse, I've tried reading extra books and extra problem solving from Olympiad papers but nothing is helping. I would need to get 70%+ average this year to get a "First Class Degree" which is what I'm aiming for. Any advice on how I can improve my understanding of Physics is welcome (not necessarily university physics), and sorry for the complaints, but I'm kind of weary of telling this to people around me.