It seems like when you want to do something significant at the level of 100 there are two sticky parts. The first is overcoming the inertia of doing nothing and actually getting started. That is the part where you go from 0 to 1.
The other big challenge is going from about 90 to 100. At this point there are a lot of hurdles to overcome to actually complete the project or get the level of execution to where you want it. If you have been wise and have made consistent progress, inertia will now be on your side. Also you will have the goal in sight. Having it so close at hand makes asking yourself and others to give a final burst of energy to push you to the 100 mark is more realistic. Lastly, by the time you get to 90 you know that its something worth doing or else you are an idiot for taking it so far. At 0 its all blue sky and speculation.
Getting from 90 to 100 is by far more work, but you have more going for you. Going from 0 to 1 is the biggest mental and habitual block because it requires actually getting started.
Is there something you have been wanting to do but haven't? Take the first step and go boldly from 0 to 1 and get inertia on your side.
Most people see this as fairly self-evident in their own life experience. What you may not have considered are the people in your life you are trying to persuade or influence into doing things you want them to do. This rule applies to them too. So for those of you in a leadership role the question becomes, what can I do to help those I lead get from 0 to 1? How do I help them move boldly to get inertia behind them so that it is a help not a hindrance? And (assuming the project proves worth pursuing) how do I help them keep up the inertia so that there is something to carry them when they get to 90 and are feeling weary?