Bhagavatam explains the inner significance of the incarnation of Lord Krishna. We know of the story of Lord Krishna having taken birth to destroy Kamsa. Who is this Kamsa? One who is not a Hamsa is a Kamsa. Hamsa is a bird that separates water from the milk. i.e separates ignorance and knowledge. Similarly for our mind to become a paramahamasa i.e to realise the eternal truth that God is in us and only that is permanent, we have to destroy the Kamsa (the wordly desires/maya). This can be achieved by satsangas and constant reading and understanding of the holy scriptures.
For us to develop moral strength and fearlessness we have to perform all acts with enthusiasm, serve the Lord (i.e serve mankind) and accept whatever life offers us as the Lord’s prasadam