Yoga has been very popular in the west ever since the western world became aware of the wonderful teachings of Sri Vivekananda, Swami Ramateertha, Sri Aurobindo and some other prominent Yogis who traveled to the western countries.
There are stories that thousands of Tantrikas were murdered by Raja Bhoj, so the genuine Tantrikas who really knew the secrets of Tantra had to go underground to continue their practice. This was not something that society could understand.
Psychoanalysis is a temporary relief, because it cannot conceive of anything that transcends mind. A problem can be solved only when you can go beyond it. IF you cannot go beyond it, then you are the problem.