feeling guilty

because today i realized i want what everybody else has. i'm not content with the many many MANY things i have. the reason i really feel bad is that i'm not a poor person that has nothing. brent makes plenty to support our family. we have lots of nice nice things. a gorgeous house. so much. but i can't stop thinking of things i want. i feel greedy and selfish. how can i set a good goal to better myself? how can i make it measurable?