This is what I saw recently. I rode with some dude who had the very same bike I had. I saw him go up crazy steep hills that I couldn't by gearing way down and spinning like crazy. Spinning like crazy is really hard but I think that's the way to do it.
If that doesn't work, imagine yourself light as a feather floating effortlessly in the aether of life as you ascend the hill.
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Momento mori, amor fati.