The main obstacle to getting things done is often not the processes, obstacles or situational factors.   It is the way the people react to what happens.  Confidence is not an egotistical reaction that ignores reality.  It is a determination and perseverance that we can and we will get it done.  It is not a conversation of if we can, but how we will.  There are plenty of excuses why things do not get done, do not get done completely or do not get done to the level of quality they could have.  The fact is that most of us, given our workload, will accept one of those excuses and let a project stop short of its potential.