Take the challenge:
If you know you can do whatever it is that needs doing, offer your assistance. Even if you are not sure how to do whatever it is, offer to learn. Be the kind of person throughout your career that values mentoring others. Engaging personalities have an easier time mentoring others but if you are an expert at what you do, start mentoring a special person you value. Begin slowly and focus on imparting your value. Build your promotion toolkit to include getting noticed by the powers that be.