One thing that really helped me is to realize that many of my favorite songs are probably not that special to most people. This is, no joke, still one of my favorite little ditties:
https://www.youtube.com/watch?v=3Io5l0YgNko&t=34m20s
I actually sometimes still listen and maybe even dance to the Amiga version of this ^^ And I'm not saying this isn't a great song, musically, but most people wouldn't want to hear this on the radio or in a club, while I would absolutely go apeshit if that ever happened. I know having heard it first as a kid is a part of it, but the end result matters. I love this tune, even though most normal people might not enjoy it, and would at least prefer "normal instruments". (And don't even get me started on L.F.F. by 4mat :D)
So I try to shift my standard from "is this really good, does this make me look awesome", to "is this too embarrassing, or really just a pointless amusical waste of time", and try to raise the bar for what embarrasses me... because even something I might not like that much, might be the jam for someone else, who knows. What would I tell that imaginary person, that they never got to hear their jam, because I was afraid of what other people might think of it? I also know songs where I like the demo or some dirty live version much more than the perfectly produced studio version, so I try to tell myself, the more the merrier.
I think what really helped in my case is that it all became coupled with lyrics that are either very personal or very political, and it took me so much.. wrestling, not being able to sleep well doing it, but also not being able to let it go for good... and also the world (and rap music) becoming a lot more crazy, and probably me getting older, to become less inhibited -- and being embarrassed about too simple music was completely overshadowed by that. It used to be a concern but it got lost along the trek :) And I also discovered that as far as "beats" go, less really is more, at least, very little is more than enough. The same goes for chip style melodies, and those two are all I need to be happy musically, basically forever.
Well, that and compos with small sample packs becoming more of a thing again. Nothing more fun than that IMO :)