The antonyms for "keep one going" are many, but they all have one thing in common - they stop the forward momentum of an activity, task or goal. Some of the most common antonyms include "quit," "stop," "abandon," "give up," "surrender," and "retreat." Other antonyms of "keep one going" include "distract," "interrupt," "discourage," "deter," "dishearten," and "undermine." Each one of these words has a unique way of stopping forward momentum, whether it's by providing a roadblock or by attacking a person's motivation.