Bageshwar Dham Sarkar

How should I live and act in the few days of this life?

Keep doing karma and keep chanting the Name

As the Ramcharitmanas says, one becomes what one's karma is. So keep doing karma, keep chanting the Name, and trust Bhagwan.

Whoever does such karma becomes the same, so keep doing karma and keep chanting the Name; the four days of life will pass.