hit a wall

The phrase "hit a wall" is an idiomatic expression that is often used to describe encountering a problem or obstacle that is difficult to overcome. It can indicate reaching a point where progress or forward momentum stops and further efforts seem to be ineffective. It can be used in various contexts, such as in sports, work, personal life, or creative endeavors, to convey a sense of frustration, exhaustion, or a mental or physical blockage preventing further advancement or success.