2 Books Found

Based on your description:

"A NONFICTION BOOK FROM 1940'S OR 1950'S. IT HAS SUGGESTIONS ON HOW TO REMEMBER TO DO LISTS ETC. TO REMEMBER TO CHECK MAIL AFTER WAKING UP IT SAID PICTURE YOURSELF THROWING THE ALARM CLOCK AT THE MAILBOX AND HEAR IT CLANK AS IT HITS. SUGGESTS MNEMONICS TO REMEMBER THINGS, A BOOK ON HOW TO IMPROVE MEMORY. "