Everyone needs their own turtle shell. An optimistic attitude protects us from the slings and arrows of anxiety. When we fill ourselves up with the powerful beliefs that we can shape events, we create our own safe haven from the doubts and worries that can paralyze us into giving up. If we assume the future will look brighter (Yes - even if we don't know for sure!), we're able to tolerate so much more stress in the present, that would otherwise be just too hard to take.