Notice how frequently you second-guess your generosity. You may have the desire to be generous but you let it pass without acting. This week act upon any impulse to be generous: if you have the thought to give something to someone, do not delay or second-guess the impulse. Give.
Each time you open the Internet this week begin by going to thehungersite.com and offer a free donation to all the similar sites listed on that web page. Say metta phrases to each disadvantaged group as you make the offering. May all being have sufficient food; may all beings be free of breast cancer.... Feel the pain associated with each category of people and wish them well. Explore the relationship between feeling pain for another and generosity. Does the pain motivate you to move towards or away from giving?
Notice your meditative posture and see if the chest and shoulders are fully open when you sit. How does your posture affect your mind? As you move through the day notice your posture when you feel selfish or irritable. Notice it when you feel generous and confident. When you feel selfish and closed down to generosity adjust your posture to a more open stance and see if that has any effect on your state of mind.