How about can't see the forest [or wood] for the trees?
The Free Dictionary:
not see the forest [or wood] for the trees: to pay too much attention to
details and not understand the general situation
In your comic, the treasure represents the trees (the details, the desired outcome or result), and friendship represents the forest (the general situation, the bigger picture). The characters were so focused on finding the treasure that they couldn't see the real treasure.
Being overly results-oriented is one way of not being able to see the forest for the trees.
Edit: Another possibility, which I mentioned in a comment, is live for the moment.
From The Free Dictionary:
live for the moment: to live only for the pleasures of the
present time without planning for the future
Living for the moment is inherently "against being results oriented", at least against those results that cannot be achieved instantly or without even an epsilon of planning. By the same token, "planning" is inherently results oriented, about achieving a result at some point in the future.
While living for the moment fits your question title well, and could be used to express the importance of the journey as opposed to the destination, it doesn't capture the essence of your comic all that well -- a bit of a disconnect there. Not seeing the forest for the trees works better for the comic.