Sink or Swim

Sink or swim?

I guess they never swim.

I always think that I can win but then I sink and I am grim.

With all the thinking I do.

With all the sinking I do.

You'd think I would be better at thinking it through.

I wrote a letter, I'm thinking of you.

We go together but I'm thinking it through.

Always sinking, always thinking it too.

No one ever told me I would be thinking it true.