I'm So Tired lyrics

I think I ought to go to bed
Its getting dark inside my head
Ive been working now, all night long,
Trying to find that impossible song.
I think I ought to go to bed, and call it a day.

Ive got my poets license
So, Im sending you this poesy;
But, dont expect no string quartet,
Or anything so cosy,

Im so tired
Think I ought to go to bed;
Im so tired
Im losing contact with my head;
Im so tired
Ive been working now, all night long,
Trying to chase that impossible song
I think I ought to go to bed, and call it a day.

Ive got my poets license
So, Im sending you this poesy;
But, dont expect no string quartet,
Or anything so cosy,

Im so tired
Think I ought to go to bed;
Im so tired
Im losing contact with my head;
Im so tired
Ive been up here all night long,
Trying to find that impossible song
I think I ought to go to bed, and call it a day.

Submitted by Guest

What do you think is the meaning of I'm So Tired by Kevin Ayers?