Mental Efficiency Series: Ten Complete Self-Help Books,Opportunities; Perseverance; Timidity; Influence; Common Sense; Speech; Practicality; Character; Personality; Poise

There are ten self-help books in the classic Mental Efficiency Series, complete and unabridged, a total of over a quarter of a million words: Opportunities: How To Make The Most Of Them; Perseverance: How To Develop It; Timidity: How To Overcome It; Influence: How To Exert It; Common Sense: How To Exercise It; Speech: How To Use It; Practicality: How To Acquire It; Character: How To Develop It; Personality: How To Build It; Poise: How To Attain It.