Persistence on the Spiritual Path

"As all true students know, however, the number of impediments is legion. Hindrances and obstacles abound. Singleness of purpose may occasionally be realized in high moments, but it does not abide with us always. There are the hindrances of physical nature, of heredity and environment, of character, of time and conditions, of world karma, as well as individual karma. What shall then be done? I have only one word to say and that is, persist. Failure never prevents success. Difficulties develop the strength of the soul. The secret of success is ever to stand steady and to be impersonal", from the book TREATISE ON WHITE MAGIC by Alice Bailey.