I wrote and shared a topic about leadership last year. See http://membelahlautan.blogspot.com/2010/03/law-of-influence.html
To possess a leadership skill, must not necessarily you be a boss or a manager.
Now, I wish to ask all of us... After working for sometime, do you find yourself a leader? Do you think that your voice is heard by others (colleague, subcon, client etc.)
If not, then maybe you need to work towards being a leader now. You may want to look back into yourself, "Why am I not influential enough?".....
Success begins with YOU!!!