If the problem is monotony, don't keep doing things the same way. Take a step back, work on something else for a while, think of different approaches to the problem, bring help.

I spent most of yesterday sneaking between monsters and blizzards in a wolf cape and my underpants to recover my idiot corpse from a mountaintop wolf ambush I'd rushed into with too much confidence and not enough lunch. The victory makes it all worthwhile.