You're a naturally positive and energetic person and those qualities of yours will serve as an example to your friend, inspiring them to push forward more boldly in their own life. You'll actually help them find their path in life and stick to it better than they might have on their own, by serving as a very positive example for them. Their vulnerabilities and fears will be flushed out; you'll teach them, simply by example, that there's nothing to fear about either success or failure.
They'll be motivated to grab hold of opportunities that come their way. You'll be able to help them to learn the benefits of taking the initiative in any given situation, of being a leader instead of a follower.