Vigyan Bhairav Tantra The Book Of The Secrets Vol-4

Whenever you are doing meditation, the very effort that you are doing it, the very idea of succeeding in it, is the barrier. Be conscious of it. Go on doing, and be conscious of it. A day will come... just through patience a day comes when effort is not there. Really, you are not there, only meditation is. It may take a long time. It cannot be predicted, no one can say when it will happen. Because if something is to be achieved by effort, it can be predicted-that if you do this much effort you will succeed-but meditation is going to succeed only when you become effortless. That's why nothing can be predicted. Nothing can be said about when you will succeed. You may succeed this very moment, and you may not succeed for lives. -Vagwaan Shree Rajneesh