Both Uses

wallow
in
Touching Spirit Bear
(Edited)

The heavy load of supplies caused the skiff to wallow through the waves.
Chpt 2 *

wallow = move with difficulty
All of his life he had squandered his choices, wallowing in revenge and self-pity, keeping himself down.
Chpt 10 *

wallowing = indulging (making no attempt to move beyond the negative feelings)

Definitions:

(1) (wallow as in: wallow happily in the mud)
to roll about lazily, especially of an animal in mud or shallow water; or the muddy hollow or puddle where it does so
(2) (wallow as in: wallow in self-pity)
to excessively give into a desire (indulge)

This is often said of something negative such as self-pity when no attempt is made to move beyond it. But it can also be used without negative connotation to indicate that someone is enjoying a lot of something such as luxury or rest.
(3) (wallow as in: a wagon wallowed through the mud)
to move with difficulty; or perhaps just to move through water or in a rolling/wave-like manner
(4) (meaning too rare to warrant focus)