Your life is important. And the great stuff of life lies right in front of you - today - if you can see it and recognize it. And, while rebuilding the walls of Jerusalem was important to Nehemiah - because it would mean people were safe at night and because it would mean business could happen during the day and because the city could finally flourish again - it's also a METAPHOR. Your life, like Nehemiah's city walls, is important - so important that you should not "come down" from the great work in front of you.