Yeah just do something that you really enjoy and time will speed up extremely fast. lol. Jokes aside, I know one method to slow down time but I doubt you'll bear the steps, plus they are 200% dangerous. Anyway, that's not the point of your interest here. The pineal gland has diverse roles and one of them is regulation of your biological clock. I'm totally sure you can manipulate that role and affect it outside of your body (actually, not really). Note that time will only speed up for you, it won't affect other's perception of time, since the reference point/source will be your own mind. If you find the right switch(es) and understand the paradoxes you might create then you're all ready to sort of alpha ''time travel''.