"I am afraid the only safe rule is to give more than we can spare. In other words, if our expenditure on comforts, luxuries, amusements, etc., is up to the standard common among those with the same income as our own, we are probably giving away too little. If our charities [giving habits] do not at all pinch or hamper us, I should say that they are too small. There ought to be things we should like to do and cannot do because our charities [giving] expenditure excludes them." - C. S. Lewis

Does your generosity pinch you? Does it punch you? In light of all God has given us in the gospel, we should regularly evaluate how much we spend on ourselves and how much we give away. I know how much I need this perspective!