Change=Chance?

When we grow, we maybe become more difficult to adapt to any change compared with the younger people. Is that because younger people are braver? I don't think so. Their brave is just coming from their innocent, our hesitations is just because of too much consideration. Become knowledgeable maybe sometimes give me an obstacle if we do not use our knowledge wisely. We must always be confident to ourselves of what we have learnt and grasp the chance from the change.