I mediate regularly, mostly during my Iyengar Yoga class. As Jbird pointed above, I encountered the same benefits. I am a physician by profession and we are human, so we also get emotional. Meditation has helped me stay calm, focused and look more clearly. I am becoming a better person as a result.
As far as investing goes, I just run a thought experiment about any company I want to invest. During these thought experiment I ask some of the critical questions like competitive advantages, strategy and ask myself this question.. Do I clearly understand how this company makes money. So I develop these mental models and then write down my basic thinking in few paragraphs. Once I am done with it then I use an app called as Grafio to let that information flow.
I don't try to get lost in accounting numbers but try to understand and find great businesses, as all of you know there are not many. I find quarterly numbers meaningless and misguiding. I don't invest in companies where management is focused on quarterly numbers, I want to understand their strategy for maintenaning their competitive advantage.
I am still learning....