Descartes' Error: Emotion, Reason, and the Human Brain (Anthony Damasio)
Strangers to Ourselves: Discovering the Adaptive Unconscious (Timothy D. Wilson)
Stumbling on Happiness (Daniel Gilbert)
Willpower: Rediscovering the Greatest Human Strength (Roy F. Baumeister)
Blink (Malcolm Gladwell)
Nudge: Improving Decisions About Health, Wealth and Happiness (Richard H. Thaler & Cass R. Sunstein)
Influence: The Psychology of Persuasion (Robert B. Cialdini)
Thinking, Fast and Slow (Daniel Kahneman)
The Hour Between Dog and Wolf (John Coates)
The Lucifer Effect: Understanding How Good People Turn Evil (Philip Zimbardo)
The Wisdom of Psychopaths (Kevin Dutton)
Skin in the Game: Hidden Asymmetries in Daily Life (Nassim Nicholas Taleb)
Personal growth
The Road Less Traveled (Scott M. Peck)
Mindsight: Transform Your Brain with the New Science of Kindness (Daniel Siegel)
I Don't Want to Talk About It: Overcoming the Secret Legacy of Male Depression (Terrence Real)
Grit: The Power of Passion and Perseverance (Angela Duckworth)
Far from the tree (Andrew Solomon)
The silent language (Edward T. Hall)
How can I get through to you? (Terrence Real)
The Chimp Paradox: The Mind Management Program to Help You Achieve Success, Confidence, and Happiness (Steve Peters)
The Whole-Brain Child: 12 Revolutionary Strategies to Nurture Your Child's Developing Mind (Daniel Siegel & Tina Payne Bryson)
Yoga Nidra (spoken meditation by Rachel Hanrahan) – this is not a book but a sound track available on Amazon and Google Music and my personal favorite amongst a large number of recorded guided yoga nidra meditations
Bonus recommendation for German-speakers (sadly no English translation available): Grundformen der Angst (Fritz Riemann)