Hope it's alright to post this here but i thought i might show off my KDE Plasma desktop. It isn't much but hey, i like it and i think that's all it matters.
No, not much, but a happy smiling selfie is seriously not a bad idea!
When we smile to our selves once a day in front of a mirror, we tend to mimic that emotion so we can manipulate our own mood in a deliberate feedback. (There are papers on it).
That is hard to habituate for some of us, so having a smiling selfie on your desktop will continuously nudge you towards ..a happier mood than otherwise. ..in theory at least ;-)