I used to sing the Kinks' Wonder Boy to Tom when he was that age (really over 20 years ago?):

Wonder boy, life's just begun.
Turn your sorrow into wonder
Dream alone, don't sigh, don't groan
Life is only what you wonder.
Day is as light as your brightest dreams,
Night is as dark as you feel it ought to be.
Time is as fast as the slowest thing,
Life is only...

Wonder boy,
Wonder boy.
Everybody is looking for the sun.
People strain their eyes to see,
But I see you and you see me,
And ain't that wonder?

Wonder boy, some mother's son,
Life is full of work and plunder[?].
Easy go, life is not real,
Life is only what you conjure.

Wonder boy,
And the world is joy, every single day.
It's the real McCoy,
Wonder boy.
Everybody is looking for the sun.
People strain their eyes to see,
But I see you and you see me,
And ain't that wonder?

Wonder boy, some mother's son,
Turn your sorrow into wonder
Dream alone, go have your fun.
Life is only...
Life is only...
Life is only...