Don't put all your eggs in one basket?

This phrase means that it is not wise to rely on just one thing for success or security. It is important to diversify and spread out your resources and investments to minimize risk.

Don't put all your eggs in one basket is a proverb that means do not concentrate all your resources or efforts on one thing, as you may lose everything if that one thing fails. It is a metaphor for the idea of diversifying your investments or interests to reduce risk. The proverb originated in the 16th century, and it has been used ever since to caution people against putting too much trust in one thing.