GN
I would modify it slightly: It's not the comparison, it's the ideal that is the thief of joy. When you compare, whether you find yourself to be superior or inferior depends on which of you two is closer to an ideal. And even if you don't compare yourself with others, having an ideal to aspire to, steals the joy.
OTOH, it also makes you improve. If you aspire, you win the long game, because you improve all the time. But you can still be miserable, because ideals are by definition unattainable.
I'm pretty sure it's a Bible quote & it has a much broader application than just creating. Chaining yourself to an ideal has a very similar effect & is perhaps more limiting than comparing your idea to what already exists.
I feel like the creation process largely requires you to get out of your own way. To allow the inspiration to flow to & through you rather than force it out with sheer will.
The doubt over your own abilities & how the creation might be received doesn't help.
An ideal outcome is subjective & only reached by comparison with what you known & have experienced.
One of the beautiful aspects of creating is enjoying the unexpected outcomes from the process. The more you let go of expectations, the easier the creation process becomes.
Achieving an ideal outcome is near impossible but iteration of both the solution & your approach is important. Create then iterate. Judgement & comparison to your ideal before & during the creation process just gets in the way.
Never actually read the Bible, but a lot of it is ingrained in western culture, so might be possible.
Me either mate.
It's just a quote that resonates with me.