2 Corinthians 8 - Give Generously

How about those Macedonians?  Their severe trials and extreme poverty (this sounds familiar, see 2 Cor. 4-7) welled up in rich generosity.  They gave sacrificially to churches in other cities, and begged for the privilege of doing so.  There was no command to do so, but they were responding with grace to the needs of others.  Paul encourages the Corinthians, and by extension, all of us, to do likewise.  How much is too much to give?  I have yet to meet the person who gave more than he/she thought was wise to God's work who lived to regret it.  I have seen that we can't outgive God.  I wish I had the courage to live more generously myself.