be a shrub in the valley!

but if it is the best shrub by the stream;

If you can't be a towering tree,

be a bush jungle!

If you can't be a bush,

Why not be a grass and bring some life to the road!

if you can't be an elk,

it's not bad to be a small fish!

but not the most vivid one in the lake!

We can't all be captains. Someone has to be a sailor.

But everyone has to do his job.

no matter how big or small,

we have to finish our work.

If you can't be a road, why not be a narrow path?

If you can't be a sun, why not be a star;

success or failure is not a matter of size-

it's only whether you have done your best.

-Doug Lamas-Malloch

The main meaning is:

No matter how good or bad people are, only they can overcome themselves, and only by cultivating their own fields can they harvest their own corn. God has given everyone a unique ability. Only when you try and practice hard can you know what this ability is. Be yourself! Manage your own small garden well! Play your own musical instrument well in the orchestra of your own life!