What is the logic behind this? That you'll somehow become smarter through self-harm? All you have in this world is yourself, everything else is fleeting and temporary. You are the one thing you must care for the most. So build yourself up.
The faculty of intelligence can be improved through the use of magick. Depending on when you see this message you might have time to start a Mercury Square today, next week, or the week after that (on Wednesdays, check the JoS calendar for your time zone and to avoid void moons).