None of the responses are correct. It goes like this:

When I've don the best I can and my friends don't understand, may the work I've done speak for me.

I believe the hymn "Our Best" is available in this hymnal:

All American Church Hymnal

Here are the complete lyrics:

1.
Hear ye the Master's call, "Give Me thy best!"
For, be it great or small, that is His test.
Do then the best you can, not for reward,
Not for the praise of men, but for the Lord.

Refrain
Every work for Jesus will be blest,
But He asks from everyone his best.
Our talents may be few, these may be small,
But unto Him is due our best, our all.

2.
Wait not for men to laud, heed not their slight;
Winning the smile of God brings its delight!
Aiding the good and true ne'er goes unblest,
All that we think or do, be it the best.

Refrain

3.
Night soon comes on apace, day hastens by;
Workman and work must face testing on high.
Oh, may we in that day find rest, sweet rest,
Which God has promised those who do their best.

Refrain

From http://www.cyberhymnal.org/htm/o/u/ourbest.htm

Thanks,
Steve

Thank you , these are the words I have been looking for. Now I would like to know the name of the hymnal it was in.
Earlene

There are two verses that might fit what you're looking for at the bottom of

http://www.cfdevotionals.org/devpg98/de980718.htm

This is the name of the hymn I remember. The words are "do not the best you can not for reward, not for the praise of man but for the Lord. Our talents may be small they may be few, but unto Him is due our best our all.".........