Sweet Spot Poem by Wei Chao

A tennis racquet,
Has its sweet spot, check it out,
So do with golf clubs,
So does with your kitchen knife,
Ye (I) use them effectively.

Productivity
Of a workforce or machine,
They do have sweet spot.
Fully manned and equipped
Factories have sweet spot too.

How about human?
Be it: lovers, kith-and-kin.
Do they have sweet spot?
Well, they are not sport gears,
Nor tools, machines, factories.

Why I (ye) search other's?
Do I (ye) know my (your) own sweet spot?
First, like tools, machines,
Useful life of an asset,
How long can I (ye) be useful?

My (your) purposeful life,
Am I (Are ye) useful for others?
My (Your) capacity,
Capability, fortune,
And luck, sweet spot keeps changing.

How can I (ye) expand
And prolong my (your) own sweet spot?
I (Ye) must be healthy,
Happy, financially sound,
And be useful … write poems. (you?)

Second, kith-and-kin,
Be utmost useful to them,
Be intellectual,
Each with different sweet spot,
I'll (Ye'll) help thoroughly, bang on.

Third, community,
Sweet spots are labour, money,
I (Ye) volunteer,
Donate, yes, generously.
Am I (Are ye) helpful to neighbours?

Lastly, government,
Pay tax and abide to laws,
Main sweet spots of theirs',
Law abiding citizens,
I'll (Ye'll) pay tax, help out many.