From communicating with others I have learned and expanded my horizons significantly. We often would talk about if we had just done Kundalini and Hatha yoga for the past so many years where we could be today. But the main thing to remember is that it is not what you could of done in the past but what you take from it. To never make mistakes in your life would mean that you were either born perfect or you never leave your comfort zone.
Our path has many rewards, but only if we work for them. We have the only path that holds any true meaning. Satan gave us life and the ultimate opportunity. We must take advantage of the life we have now, and not only advance ourselves but the whole of Humanity.