When the going gets tough, you turn to your friends and family for support. But they can help keep you emotionally resilient year-round. Close social ties can reduce stress, boost happiness, improve self-worth, increase your sense of belonging and purpose, and even decrease your risk of developing serious mental illnesses, according to the Mayo Clinic. Next time you're feeling blue, grab a cup of coffee with your sister, call your best friend or make a date with your significant other.