The first thing needed is to open some window, however small, so that from time to time we can have a little glimpse and breathe a little air and let in a little sunshine without which one begins to experience stifled even possessing everything else in the world.
The vital needs to be both refined and strengthened. Art, music, poetry are some of the ways of refining the vital. On the other hand, exercise, sports, games, deep breathing methods help strengthen the vital.