[HalfCrimp]

It certainly did for me.

I was a regular espresso drinker, one in the morning with my wife before work and giving it up has made a world of difference. Even a coffee at 7am was impacting my sleep, I suspect I just metabolise caffeine slowly.

I can still have a tea in the morning to replace the ritual, and chocolate doesn't cause me any issues (in moderation) so I'm not 100% caffeine free, but it's made a huge difference to my sleep quality and overall mood. The first week or so felt very sluggish, but one I was sleeping properly I now feel more alert and productive without coffee than I ever did with it.

I still have one occasionally (~2 a month I guess) because I enjoy it, but I definitely notice the sleep impact that night and feel crap the next day.