Genevi&egrave;ve Behrend was a teacher of <i>Mental Science</i>, a <i>New Thought</i> discipline created by Thomas Troward.&nbsp;<br /><br />&quot;Your Invisible Power&quot;, published in 1921, is her first and most famous book. It is a guide to the use of visualisation and other mental processes in life enhancement and the achievement of personal goals.<br />Undoubtedly, &quot;Your Invisible Power&quot; is one of the earliest and most inspirational books of New Thought.