Ok now I'm talking in general. Here's some advice: DON'T BE A NERD.
The definition of a nerd: One who does nothing but studying, enjoys only studying, is isolated, and experiences weakness in social interaction.
One of my students found out that I play video games and he was astonished. Because he used to think that I was a nerd and that was why I had so many good grades.
I told him: "Look bro, I don't study day and night. I study when I have to." But that "when" is very essential to spot. You need to practice estimating how much time you need to assign for studying for an upcoming exam in...