I couldn't agree more: Worry breeds worry; bosses needs to realize everyone around you starts worrying too. Even if the worries are justified, don't under-estimate how much worry de-values your business  

A simple process we use with executives to turn negative emotions into positive momentum, is to assemble your top performers for a "jump-start brainstorming" about how we can achieve a short-term bump in either revenue or profit. 

A recent client has turned around morale in their office completely with this strategy after a major setback mid-year where a key client went bankrupt.