Momentum is not easy to create. A lot of things have to align before you gain momentum. It takes grace, blessing, luck, discipline, hard work and focus to create this momentum.
However, when you establish momentum there is an influx of energy, creativity, and speed. In this state, a lot can be achieved. However, if you let up and allow the momentum to slow or stop, it takes a huge amount of energy to rekindle the fire.
When you have momentum, this is the most opportune time to go all out!