This can apply to either piano, guitar, or whatever instrument you’re playing. Same principle.

I am really bad at writing music.
Not because I don’t get/understand music, but because I have this stubborn refusal to commit to anything that I don’t deem “perfect” on the first go. Not the worst thing in the world, except for the fact I have an incredibly finite amount of time per day (or week) where I can sit down and do music related nonsense.

Because of my refusal to go with a result that falls under the category of “good enough, we’ll workshop it later”, every 2-3 hours I spend focusing on music writing usually results in 1 riff or progression.
90% of that time will be spent improvising, playing whatever comes to mind, just generally running up and down the musical scale until I hear something I like. Once I hear that “thing” or get a feel of “that’s the one”, I’ll hone in and refine the result.

I will then delete the result and start over from scratch, because it wasn’t good enough on the first one or two tries. Then I’ll just delete everything I come up with after that point because it also isn’t “right” or “perfect” in the first go.

End result is that I walk away from the DAW after 3+ hours with nothing to show for it (outside of unintentional piano practice from all that faffing around). I don’t exactly have a surplus of time left to be alive, so time spent with nothing to show for it is extra demoralizing (even if I did enjoy playing the instrument for that time).
Putting a focus on all time spent being “productive” or having some tangible result is a problem in itself, I’m aware. It’s a mindset that leads to you thinking “Oh God I’ve accomplished nothing today, this is awful” even after taking your kid to fly kites in the park.
Not the topic at hand, but one to consider.

What I made wasn’t perfect, but it doesn’t have to be.
What I need to make myself understand is that even if the riff isn’t perfect, it’s still a building block that can be touched up or improved later on. Yeah, it’s not quite on time. Yeah, it doesn’t convey the right emotion. Yeah, it’s 2 octaves too high and needs to be moved down.

But that can be done later, so long as the riff is still there when I come back.
It isn’t complete, but it is a useful framework.

It’s perfectly fine to throw down something that’s flawed after a few hours of work, save it, close the DAW and walk away to go do something else. A flawed riff or progression ain’t carved in a goddamn stone tablet, it can be edited and played with.

Set up something workable, walk away, come back later, fix it up.

5 pushups are better than 0 pushups.
1 flawed riff is better than 0 perfect riffs.