Paramahansa Yogananda - about meditation

"Don't wait every day to see how a spiritual flower blooms in the garden of your life.

Trust that God, if you give yourself totally to Him, will give you spiritual fulfillment in His own time, that is, at the right time.
After you have planted the seed of the divine aspiration, water it daily through intense spiritual practice and correct actions. Remove from your being indecision, distrust and inertia.
When the shoots of the divine perception appear, take care of them with devotion and one morning you will notice with amazement how the most beautiful flower, the flower of Self-realization, bloomed." [...]

"Only yoga aspirants who make an extreme effort can come to know God;

Not those who constantly find excuses by saying, "First I have to have something to live for, then to find a quiet place, and then I will begin to meditate."
Those who continue to procrastinate their spiritual practice will never come to know God.
But if you say to yourself: "now, at this very moment, I will enter into a deep meditation " - you can instantly reach an uplifting spiritual state.
When a being dies of sleep, she can fall asleep anywhere, instantly. So it is with a being who loves God. She can meditate anywhere, even in a train station or in a market.''

Paramahansa Yogananda