Can I make myself eat only beans and rice all month?
That could be difficult. Do you want to eat only beans and rice for this month?
Yes. I just do not want to spend money on food, I'm cheap!
Food is not cheap these days, and beans and rice are okay in small to medium amounts during a month. If you eat the same exact things every single day it is bad because your body needs variety to thrive. Buy cheap foods at the dollar store to help with the spending.
But the dollar store has bad food and the people who work there food are mean.
That sounds like a problem but there might be somewhere else that you can shop for cheap food. It is just better for you to find more things to eat so that you don't get sick from eating the same thing over and over again.