The Chinese seem to have the best idioms.
If you don’t know the actual definition of an idiom, I had to look it up too - so don’t feel so bad.
One that I came across recently is “constant dripping of water wears away the stone.”
If I gave you a cup of water and a large stone and told you to use the water to cut through the stone, you’d tell me it’s not possible.
Maybe not with just that one cup of water, but with enough of them over time, it can be done. (see: Grand Canyon.)
Many people who have to make major changes to their health and bodies don’t see the canyon they can carve out over time.
Instead, they focus on quick wins and if the results don't come fast enough, they give up.
Another way to represent this idiom in a word is “persistence.”
You don’t know how many cups of water it’s going to take to cut that stone.
Could be one hundred or hundreds of thousands.
Persistence is the only way to figure that out.