Its not like the ” suffering ” aspect or the ” pain ” aspect of the human existence ever goes away. As the soul evolves through lifetimes, the suffering aspect which served as a catalyst for growth, understanding and expansion in the initial part of the journey, is now no longer needed as much.
The soul then starts to evolve for the sake of growth, expansion and the yearning to be home or in complete alignment with the Divine.
The events , relationships etc that caused huge suffering still occur, but no longer have the power to draw the soul into their drama.
The soul is less and less affected by the drama.
The path is smoother, not because there are no longer any rocks on it, but because the souls attention is no longer on the rocks or their avoidance.