The most painfull phase for you during musicproduction ?

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For me it's arrangement - I get stuck in this phase for weeks untill my ears blead. Looking at the responses from other subs this seems like to be the biggest painpoint for most people. What I love and what always brings me back to creating music is the sounddesign phase.
I think, it's when you want to make a certain synth sound, but can't make it.