Oprah Winfrey, when once asked what she wished she'd learned earlier in life said "I wish I'd known how to distinguish radiators from drains". 

She explained that "radiators" are people who give out warmth, kindness, love, honesty, positivity, energy, enthusiasm and all the good things which people need and respond to.

"Drains" are people who are negative, downbeat, suck the energy out of others and don't like themselves.
 
Life's to short to work with drains, ............... unless of course you're Dynorod.