Self development is a

We can spend our whole lives underachieving.', Philip Crosby, Reflections on Quality',

The future belongs to those who prepare for it today.', Malcolm X', US black nationalist leader (1925 - 1965)

One of the universal rules of happiness is: always be wary of any helpful item that weighs less than its operating manual.', Terry Pratchett, Jingo',
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The only ism Hollywood believes in is plagiarism.', Dorothy Parker', US author, humorist, poet, & wit (1893 - 1967)

If you believe in what you are doing, then let nothing hold you up in your work. Much of the best work of the world has been done against seeming impossibilities. The thing is to get the work done.', Dale Carnegie',