I would say that there is a possibility that people won't be able to relate to those proverbs, ans they come from a different time (silly example: proverbs that described weather in certain months become irrelevant with global warming!)
There is also a possibility that they would recognize something that is relevant to their lives, an advice, that they can use: this will they make them feel validated that they're not the first people to feel like this and that will help them consequently follow their plans.