Follow CBSPHILLY Facebook  | Twitter

PHILADELPHIA (CBS) — Are you feeling sad or depressed today? There could be a reason why.

The third Monday in January has been dubbed “Blue Monday” by British psychologist Cliff Arnall.

He came to this conclusion by factoring in weather, worries over post-holiday debt, having to return to work and failed New Year’s resolutions.

Video Shows Daring Rescue Crews Swimming Through Freezing Water To Save Stranded Dog’s Life

If you’re experiencing “Blue Monday,” Dr. Arnall has some tips.

He says try not to wallow in your sadness. Instead, consider what’s contributing to your blood mood and make proactive changes.