My Biggest Fault

I know quite well my biggest fault,
There’s no need for a lecture,
It’s really pretty obvious,
There’s no need for conjecture.
My mind is quite ephereal,
As flimsy as a locust.
I find it very difficult
To keep all my thoughts focussed.
At first, I’m so determined
And with clarity I ponder.
But half an hour down the road
My thoughts begin to wander.
To finish what I started
Would be cause for celebration.
But how can that be possible
If I lose concentration?
I’ve been to see psychiatrists
And told them of my problem,
But when they answer, I… er…