It took over 30 years, but I've finally gotten good at avoiding feature creep. The trick is to tell yourself "I'm just looking to get it working for now - I can upgrade when I know more about what it needs," then never upgrade anything.

Oh, my fancy headphones are just plugged into a normal headphone jack instead of that DAC and amp I was going to get? Whatever, they still sound pretty good. Oh, I got that fancy graphics card but never got a 4k monitor to make use of it? Whatever, I play more Minecraft than anything else anyway.

Better to have something that works well enough than leave everything half-assembled because I lost motivation before I figured out what all I needed to finish it.