Answer: We can attain eternal pleasure only during our corporeal life. And this doesn’t change when the physical body dies.
We can hold on to pleasure that is external to corporeality while still in our physical body and continue developing this desire beyond the limiting frameworks that are depicted to us by the world and by our reality. We must attain at least the beginning of spiritual pleasure even before the death of the physical body, and then we will be able to continue it forever.
From the Kabbalah Lesson in Russian 8/28/16