The power of gratitude

I often see people take what they have for granted. They focus on what they seemingly lack. 

For example, a loving wife passes over a fresh, hot cup of tea to the husband only for him to bark back, not a "thank you" but "where's the rest of it?". A simple gesture of love and consideration turned into a scolding episode. Why do people do that. Just be thankful she cared, I will say.

Be thankful of what you have and forget what you don't!