Living in the US a daily budget would be something along the lines of
Groceries: $20
Gasoline: $7
Entertainment: $10
Housing expenses: $35
Health Insurance: $11
These would be a sample daily budget of all of the things that an individual would have to consider spending on a daily basis. Obviously, you can always cut down and tighten the budget in order to spend less and ultimately save more money. The main thing would be getting rid of non-necessities such as entertainment. Next, would be taking the bus or walking instead of using a car which would cut your cost by 80% or more. Lastly, would be buying off-brand grocery products that cost less. The only expenses that cannot be adjusted are housing and health insurance since they are necessities and have a fixed price.