"Be the one who always says YES" Cialdini, Martin, Goldstein

Interesting book, compact size. The main postulates are highlighted in large print and immediately catch the eye, very convenient. Don't be afraid to ask for help and when helping others don't impose yourself by saying "not worth a thank you". Learn to appreciate yourself and others. How to behave correctly, what to say in order to achieve your goal - competent advice in any situation - at home, at work, with friends.