Some major writers have a huge impact like Ayn Rand who to my mind is a lousy fiction writer because her writing has no compassion and virtually no humor. She has a philosophical and economical message that she is passing off as fiction but it really isn't fiction at all.
Your attitude is like a box of crayons that color your world. Constantly color your picture gray and your picture will always be bleak. Try adding some bright colors to the picture by including humor and your picture begins to lighten up.
