It couln't be done

[ainitatyb]

There is an inspirational poem about people who keep saying it couldn't be done. Something about them being so busy saying 'it couldn't be done' that they have to stand aside for the person busy doing it. This is all I remember. Can anyone help me with the works of the poem?

[swedeheart]

Sounds very much like this one

[ainitatyb]

Many thanks