You change your behavior by changing the way you think. But the way you think is as ingrained and habitual and as resistant to change as any physical habit. If, for example, you find a book that really makes a difference to you, read it again and again. Make it an annual event. Every time you read it, you'll come across things you'd forgotten about.
Audiotapes are ideal for repetition.
Listen to tapes in your car and traffic jams will be transformed from an annoyance to an extended opportunity to improve the quality of your life. Telling your friends about something you've learned helps cement the new information in your mind. The more you share it, the better you learn it. The effort and concentration it requires to explain something to someone makes it clearer in your own mind and more permanent. There are always so many new books, new tapes, new seminars, new ideas, new information - we know we'll never get to it all, but our curiosity constantly pulls us toward it.