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for all one is worth

for all one is worth idiom

To the utmost of one's power or ability, as in Coming onto the homestretch she ran for all she was worth. [Second half of 1800s]
for all or for what it's worth; for whatever it's worth. Even though it may not be important or valuable. For example, Here's my opinion, for what it's worth, or For whatever it's worth I've decided to take the train. [Late 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.