Character grows where choices seem too small to matter.

The choices that shape character almost never announce themselves. They arrive as small things you could do either way, where nothing much hangs on the outcome and nobody is looking. That is precisely why they are formative. You make them honestly, without the pressure of consequence, and they accumulate.

Notice the next choice you dismiss as too minor to matter. Make it the way you would want to be described. Nothing will happen, and something will still have been built.