The nudge gets you going leading to a rhythm creating the momentum. Getting to momentum is hard; however, staying in momentum is easier.

When you create momentum there is an influx of energy, creativity, and focus. In this state, a lot can be achieved.
However if you let up and let the momentum stop, it takes a huge amount of energy to rekindle.

When you have momentum, you want to optimize. The way to do this is to proceed with gusto completing what you have set out to do. The trampoline effect of momentum can be amazing and leapfrog you to a new level.

You may experience doubt about your approach, however, crush the doubt before it crushes you!