In Acts, the bible relates what happened when the day of Pentecost came.

When the day of Pentecost came, they were all together in one place. Suddenly a sound like the blowing of a violent wind came from heaven and filled the whole house where they were sitting. 

(NIV, Acts 2:1-2)

What is interesting about this event to me is when the day came, the sound was sudden.

Tony Robbins, a world-renowned speaker, has said that change happens in an instant. He has talked about clients who had been contemplating breaking a habit, smoking for example, and could not seem to do so. Then a life-changing event happened and suddenly they quit.

Or have you had a relationship that was trying your sanity or a habit you had been wanting to break, a trauma occurred, or you become fed-up, then suddenly you ended the relationship or broke the habit? Or have you ever been working on a project for a while not knowing when you will get your intended result and suddenly you got your breakthrough?

What happened? The day came. But that day would not have come if that incentive was not repeated, you did not keep on showing up or you did not keep doing the required actions. You do not know when your first or next suddenly will happen. It is said the darkest hour is just before dawn.

Persist until your suddenly.