gamely
With brave, cheerful effort, even when something is hard.
Gamely means doing something with courage and good humor even when it's difficult, uncomfortable, or you'd rather not do it. When you tackle a challenge gamely, you're showing willingness and a positive attitude despite your doubts or fears.
Picture a student who's nervous about public speaking but gamely volunteers to present first, or a kid who hates getting up early but gamely joins the family camping trip anyway. The word suggests you're being a good sport about something that takes effort or bravery.
You might gamely attempt a difficult math problem, gamely try a new food you're suspicious of, or gamely keep playing soccer in the rain. The word captures that admirable quality of not complaining or giving up, but instead facing a challenge with determination and grace.