Change your Identity. If you've been in a dependent position for a long time, chances are that dependency has become ingrained into your identity; your vision of yourself; your self-concept. You may even engage in labeling yourself, "I'm a dependent sort of person" (labeling being a cognitive bias you might want to look into correcting).

To the extent that you see yourself as a fundamentally dependent person, you might profitably spend some time exploring how this identity came to be, and whether it fits who you want to become. The effort you put into exploring the reasons and ways you have come to think of yourself as fundamentally dependent will pay off by increasing your awareness and insight, which will, in turn, help you recognize and correct your dependent beliefs and behaviors.

"The journey of a thousand miles starts with a single step", as the saying goes.