A few grad students deal with pressure by not doing their work, but far more deal with it by working constantly, denying themselves rest or play.  Even if they become ill they keep working, which not only makes their work bad, but makes their illnesses last longer.

For them, unsolicited advice:  During the holiday, take real time off.  Enjoy your families.  Have some hot chocolate with friends.  Catch up on all that missing sleep.  Pray more.  Worship.  Give thanks to God.

Stop making excuses.  It’s okay.