Vairagya, ahimsa, prajna. There! I’ve put the whole of spiritual practice into three Sanskrit words, meaning, respectively: non-attachment (or detachment), non-violence (in all forms, not only physical) and inherent wisdom. Living from natural, intuitive inherent wisdom is the reward for successful practice.
And the aim of all true Spiritual Practice (having nothing to do with religious dogma and mythology) is to eliminate the habit energies (vasanas) that have accumulated through many lifetimes, purging the compulsions that have formed us and have guided our lives, making our karma.
Ahimsa, non-violence, is comparatively easy. Vairagya, detachment, is terribly difficult in our modern life, being in the midst of it and yet detached from it. Not one in a million realizes vairagya.
Live a straightforward, non-scheming life and you will be on the way.