It says in Proverbs:
“give me neither poverty nor riches;
feed me with the food that is needful for me,
lest I be full and deny you
and say, “Who is the LORD?”
Phil Cogan has written a wonderful, challenging post about our attitude to finance and giving over at Matthias Media here: http://matthiasmedia.com/briefing/2012/11/leading-in-finances , I would highly recommend reading it.