Happiness is a state of mind, therefore the real source of happiness lies in the mind, not in external circumstances.
If our mind is pure and peaceful we shall be happy, regardless of our external conditions, but if it is impure and unpeaceful we shall never find happiness, no matter how much we try to change our external circumstances.
Meditation enables us to cultivate those states of mind that are conducive to peace and well-being, and eradicate those that are not. Through study and meditation we strive to develop three types of wisdom – the wisdom arisen from listening, the wisdom arisen from contemplating, and the wisdom arisen from meditation.
When fully developed, these wisdoms completely eradicate all negativity and all confusion from the mind. Success in study and meditation depends upon creating the right inner conditions, specifically receiving inspiring blessings, purifying negative karma, and accumulating meritorious energy.
We achieve these through supporting practices such as relying upon a qualified Spiritual Guide, making offerings, reciting prayers, etc.