When a plane is about to land, it needs all of its power to resist its speed so that it can touch down safely. The force of it pushes with great pressure.
In the same way, true spiritual growth involves pressure and resistance. We cannot expect spiritual Light to just to flow into our life and everything will be perfect.
The eventuality is that each one of us, each part and each speck of every human being, will be returned to the Endless in its wholeness. But this will take work on our part. It will take pressure in the form of challenges that we face. It will take resisting and overcoming adversity. But more than anything else, it will take our ability to have the certainty that the Light force of the Creator can bring us there.