As the poet Rumi suggests, we are all like fish driven by thirst. Unaware that we are already immersed in the thing we seek, we flail around helplessly when all we need to do is swim. As I see it, failure is merely the first stage of success. And if we are living an authentic life, happiness unfolds by itself.
The truth is, when we feel young, it's nice to have a conversation with someone younger, reminding us how far we've come. And that our experiences have value. And when we feel old, it's nice to be reminded that we still have so far to go. Long stretches of time to make mistakes, and fail, and fail again.