The psychological condition dysthymia has a number of typical characteristics: low drive, low self-esteem, and a low capacity for pleasure in everyday life. That may or may not be what’s happening here, but raising the “capacity for pleasure in everyday life” does seem to be helpful in establishing the ability to find a pleasant bodily sensation once access concentration is established. One of the best methods for doing this is more mettā, more compassion, and more muditā (appreciative joy) practice.