Suffering is a product of limited knowledge.
Wise is the one who learns from another´s mistakes. Less wise is the one who learns only from his own mistakes. The fool keeps making the same mistakes again and again and never learns from them.
By self-study, by observing, by being hollow and empty, you become a channel - you become a part of the Divine. You are able to feel the presence of Divinity. All the different angels and devas, all these different forms of our consciousness, start blossoming.