Selected Guided Meditations
Headspace offers 10 minute guided and themed meditations that can be made into a daily practice.
Calm offers a free 7-day meditation program with different scripts, each 10 minutes long.
Insight Timer offers meditations with a focus on gratitude and positive mantras in addition to meditation timers.
Full Catastrophe Living by Jon Kabat-Zinn
The Power of Now by Eckhart Tolle