I was pretty good at all the sciences up to GCSE, but I really struggled with A level physics – I had to work VERY hard at it! And at university, I originally wanted to be a chemist but soon realised that I just wasn’t good enough at it, so I concentrated on biology instead.
The first proper biology exam was incredibly tough (2 huge books!) I thought I wasn’t going to make it and that’s the only time when I thought that maybe it wasn’t for me and that I may have to quit. Surprisingly (and showing that I didn’t have a big understanding of my capacities!), I got almost top marks and an incredible boost in confidence.