Personal growth is a vital and important issue for EVERYONE! (not all TED talks are related to personal growth, but many of the popular ones are)
TED Talks are great - if you are new just sort by Most Popular and start there.
Amy Cuddy on Body Language is right at the top and a great one to start with.
Here's another similar site I like (the videos are shorter on average):
http://bigthink.com/videos?topic=62
FWIW, a provider that has sought out and watched a TED talk is immediately more alluring to me.