Headspace - Meditation made simple. We'll teach you the life-changing skills of meditation and mindfulness in just a few minutes a day.
Sleep Cycle - Helps you learn how to relax, develop more helpful ways of thinking, and identify active steps that will help you take charge of your anxiety.
Authentic Happiness - Features questionnaires, links, a book list, and news about research happening at the Positive Psychology Center at the University of Pennsylvania.
Calm.com - Mindfulness app and website