not able to go on
not able to go on
Having no hope of or ability to continue (doing something). After walking through the desert for nearly two hours, I wasn't able to go on any further. I'm sorry, but I'm not able to go on working for you.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
not able to go on
unable to continue (doing something—even living). (Not able to is often expressed as can't.) I just can't go on this way. Before her death, she left a note saying she was not able to go on.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.