What can you say about Freud? - the father of psychotherapy with one of the best minds of the last century who manages to explain his ideas in such a clear and logical manner, supporting them with copious examples from his own life as well as that of others, that the book is as entertaining as it is informative.
The book ranges through such topics as slips of the tongue, misreading, losing things and through his painstaking analyses, he convinces us of the correctness of his assertion that really they are not errors at all, but the subconscious overriding our conscious thoughts.
The upshot, though, is that you will begin noticing the errors you make yourself and it is often only the work of a few moments to uncover the reasons you actually made these "mistakes". Just as revealing, you will not be able to help yourself from responding mentally to the errors made by your family and friends and this will provide you with insights into their real intentions and feelings, insights they may not even be aware of themselves.
A fascinating introduction to psychoanalysis which will open your mind ( and no, not everything is related back to sexual hangups, as detractors of Freud may make you believe ) .