And the tide rushes in

I've been searching for my dream A hunderd times today I build them up, you knock them down, Like they were made of clay, Then the tide rushes in And washes my castles away. Then I'm really not so sure When side of the bed I should lay, I should lay... You keep looking for someone To tell your troubles to, I'll sit down and lend an ear Yet I hear nothing new. Then the tide rushes in And washes my castles away. Then I'm really not so sure When side of the bed I should lay, I should lay... Blackbird sitting in a tree Observing what's below Acorns falling to the ground, He'll stay and watch them grow.