My best days involve 20 min of headspace. It is the best mindfulness app I have found. Headspace somehow allows the mud in the mind to settle and clear thinking to take over when done consistently. I now have clearer thinking throughout my day and I look forward to my sessions. I highly recommend this app to all my friends who want a better quality of life.
Novice to expert about Headspace: Sleep & Meditation, v2.10.1