Most every day, there's a new study to show how meditation lowers blood pressure and decreases anxiety, not to mention the intangible benefits of increased happiness and greater compassion. This Harvard study says "meditation literally rebuilds the brain's grey matter in just eight weeks."
Yay meditation! But there's another side to meditation you're not likely to read about in a study. A prolonged practice brings increased awareness about yourself and others. I don't know how to say this, but with increased awareness comes increased awareness. Sometimes reality is not all that. Sometimes clarity is uncomfortable. Twenty minutes of stillness once or twice a day changes the way you process the world and when the truth of your brain and your heart converge, what follows may be awkward and inconvenient.
No one ever said enlightenment would be easy.