Contrast that will ADD/ADHD. I'm not convinced it has anything to do with maturity or a lack thereof. Sure, mindfulness meditation helps quite a bit. But I think you can be mature, self sufficient, polite, etc, and yet still have ADHD, or immature, etc. and have ADHD. Not to say I'm a shining beacon of perfection with no room for self improvement, but the point is there's little to no correlation there.