Great leaders are eternal optimists and surround themselves with people who believe in what they believe to infuse positive spirit in them to buy in to the JUST CAUSE.

The most necessary ingredient for the same is OPTIMISM and staying away from NEGATIVE , PESSIMISTIC and CORROSIVE people.

The following quote from Simon Sinek , aptly mentions the same:

“The ONLY way to DEFEAT PESSIMISM is with OPTIMISM.”