How do you define a whole day?
In U.S.A. a whole day of learning is usually 10-2 and 4-7:30 unless you have a morning and evening kollel.
So if you are here in U.S.A. there is time for doing a bread route for a bakery, taking an elderly man to shul, teaching English to lower grades,cleaning a shul,delivering for a grocery or others.
Remember it’s not a sin to work, it’s a sin to steal!