We may say that the work for which Sri Aurobindo and the Mother came was fulfilled in a way on the 29th February 1956. Sri Aurobindo had predicted this in one of his diary notes.
She has assured us that we must not be bewildered by appearances, and that Sri Aurobindo is in our midst as a dynamic Presence guiding us on the path of transformation, and that the work undertaken by him is going to end in a success.
The whole purpose of yoga is to transform and divinise human life and hence the working is on a vast field and area of life. In this sense it is a laboratory of spiritual evolution.
The Overmind is the line where the finite world parts from the infinite, the temporal time bound hemisphere of existence parts from the eternal hemisphere that alone can make our life whole.
They met on the 29th March 1914 when time and circumstance conspired to open the doors of destiny. The veil was rent almost instantaneously and the recognition followed. A new matrix of time had begun.
If one has decided to take up this path, then it is best to read the Mother’s writings, which contain both aspects, the fundamental foundations and principles of the Integral yoga as well as the detailed aspects of the practice.