You'll probably have to drill into the major categories for the directories. Take a look under some of these and you might find a sub category for personal development...or something close. Home and Family Society Education Health and Fitness
- Open the Google directory. - Type in your keywords - find similar sites to yours. http://www.google.com/search?q=personal+development&hl=en&cat=gwd%2FTop - check in which category they have been approved. - follow their example and submit in the same category. Most directories have a search option. I like to check in Google though, because it has the most categories and subcategories. Good luck!