And the harder you try the harder it gets. Do you ever find that when things are more stressful e.g. with exams or whatever, you get like really restless nights where you focus really hard on one particular thing like a maths problem or something, but then wake up and realize that it was all complete garbage? Like I remember once thinking I'd figured out something about orbits of planets or some sh*t, scribbled some stuff at like 3 am and didn't sleep at all the whole night, but then when I was less tired the next day realized none of the scribbles made any sense at all and had no idea what I was actually thinking about?