A lot of mothers in the poor parts of the world can aslo testify with being overwhelmed at times as they struggle being a single parent taking care of 4, 6 or more young children.
The feeling can be you do not know where the next meal coming from, but you will have to find a way no matter how it will be provided. Just to pressing on because hungry belly children not a good thing, especially in the case of health.
Being overwhelmed can cloud a person's mind to give up on people or things that are of importance.