[ahimel]

Pick something you'd like to help with. Was it the poverty that bothered you most? Lack of healthy food? Lack of clean water? Lack of education?

I'm sure you can find a charity that addresses that need. Come up with some system for donating money. Maybe every time you buy a luxury -- an ice cream cone at the mall or a new pair of shoes -- you put an equal amount into your charity savings. Or see how often you can muster the willpower to not buy the item at all, and put the money into charity savings. At the end of each month, donate all that money to your chosen charity. That allows you to be grateful for the abundance of your life, and use that abundance to help others.

Once that becomes a habit, think about doing something proactively. If it's lack of education that bothers you, look into programs that allow you to go teach English in foreign countries. If it's clean water, volunteer at or organize a program to create water sanitation plants in third-world countries. (Starbucks has such an initiative, or, if you want to create your own, I know an environmental engineer that has the same dream.) Whatever you want to fix, make some small steps towards fixing it.