Oh... sorry to double-post, but:

Me:
graduated high school at age 17
graduated college (4-year) at age 21
went to college (different school, different program) for a year
went to grad school for two years
transferred to a different grad school, spent 2 years
was miserable (am miserable)
am trying to take a year off now to collect my sanity and health
happy about it!!!

Don't push yourself too hard... that's what I did and I burned out. But also don't take it so easy that you lose sight of your goals (that is worse IMO)