Analysis of When You've Done All You Can Do

When you've done all you can do
to nurse, preserve and spare
a fruitless love affair it is time to construe
that issue as unfair and give-up all repair
When you've done all you can do
to build, revamp and hone
a perfect muscle tone it is time to construe
that mission as a groan and seek a comfort zone
When you've done all you can do
to solve, restore and mend
a conflict with a friend
it is time to construe
that trouble as dead-end and craft a novel bend
When you've done all you can do
to tweak, better and right
a shady fly-by-night it is time to construe
that business as a blight and switch-off every light