The sin of despair does not have a whole lot to do with health, work, hunger, etc. It is aimed more at the belief that you cannot be forgiven your sins and give up on trying to be a faithful person. Deciding perhaps to sin in every way you can because you have lost all hope of salvation and will go to hell no matter what. Some people actually have said that that is what they believe. As long as you can breath it is never to late with God. Hold on to that hope and you will not commit the sin of despair.