What are the marks of spiritual progress? How can I know whether he is advanced in the spiritual path or not?

Peace, cheerfulness, contentment, dispassion, fearlessness and an unperturbed state of
mind under all conditions indicate that you are advancing in the spiritual path.
Spiritual progress is not measured by Siddhis or powers, but only by the depth of your
bliss in meditation.
These are sure tests of your spiritual progress:
Is your interest in inner spiritual activity and outer Sadhana increasing day after day?
Does spiritual life mean to your consciousness a matter of great delight, a delight fa… http://y-v.de/bnA5mK