#1.)  YOUR DOG.  An untrained animal can cause a lot of stress.  If your dog destroys the house while you're at work, or barks all night long, it raises your general level of stress and screws with your sleep patterns.

But don't go shooting Spotty...Think about hiring a trainer.  Statistically, people with well-behaved pets generally live longer and have less stress.

#2.)  YOUR ALARM CLOCK.  Some research shows that alarm clocks with blue numbers can interfere with your internal clock, and basically make you feel like you're jet lagged.

You're also more likely to have a heart attack in the morning than any other time of the day.  Double Stress Whammy.

#3.)  FACEBOOK.  Constantly hearing how great your friends are doing is fine, unless YOU'RE not doing great.  If your friends are all getting married and having kids, and you're still single, it can take a toll on your self-esteem.

#4.)  THE LIGHT IN YOUR BATHROOM.  Fluorescent lights make every wrinkle look ten times worse.  And research has even shown they increase A.D.D. symptoms in kids.

*Use a nightlight...it's quite relaxing.