Survival is a biological necessity without which neither the self nor the Self (Brahman) is experienced as the purpose of life: so survive for this opportunity.
It is difficult to be free of attachments but this is vitaliy important to obtain awareness of the imminent reality to base one's actions on: that is the way to survive.
God is experienced through the 'self' mostly dormsnt untill accessed through bhakti whereas the 'Self' (one's true nature) is Brahman upon liberation from life in the Samadhi state.