It is difficult to free ourselves from the astral and mental planes – ordinary feelings and thoughts – to rise to the causal plane where the spirit dictates its law. Just as a fish that decides to leave the sea or the river to step out into the open air should prepare its lungs, someone who wants to launch themselves up to the causal plane needs to develop the appropriate organs.

And even when they succeed in projecting themselves up there, they cannot stay for more than a moment: they still lack the inner conditions required to remain there for any length of time.
You will one day be able to achieve these conditions if, through prayer and meditation, you strive to ascend to the higher regions of your being as often as possible. Little by little, you will feel the impact of this work upon your thoughts, your feelings, your daily behaviour, and even upon your health.

It will be as if orders had been given from above to organise and harmonise everything within you. Imagine you are preparing to climb a mountain.

This image will bring you to another mountain within you, and then another, until the day you reach the summit, the causal plane, your higher self.

Omraam Mikhaël Aïvanhov