Sell all I have and give to the poor?

I still don't get what Jesus wants me to do with this story of the rich young ruler asking "what must I do to inherit eternal life?".

When Jesus heard this, he said to him, "You still lack one thing. Sell everything you have and give to the poor, and you will have treasure in heaven. Then come, follow me." Luke 18:22 (NIV)

I don't view myself rich by North American stantandards, but I'm rich considering this:

At least 80% of humanity lives on less than $10 a day
http://www.globalissues.org/article/26/poverty-facts-and-stats

So is Jesus asking me to sell all I have and give to the poor to be saved?

Would this be a responsible action to take? Removing all financial security from my wife and kids?

Then I find the story of Zacchaeus on the next page.

But Zacchaeus stood up and said to the Lord, "Look, Lord! Here and now I give half of my possessions to the poor, and if I have cheated anybody out of anything, I will pay back four times the amount." Jesus said to him, "Today salvation has come to this house, because this man, too, is a son of Abraham. 10For the Son of Man came to seek and to save what was lost." (Luke 19:8-9 NIV)

Zacchaeus only gave half of his possessions to the poor, and Jesus declared him saved.

Whew, I only have to give half my possessions to the poor now? This should be much easier!

Just a minute... I've got to do some number crunching...

Uh....nope, that $30 to Compassion Canada isn't quite half.

:(

OK, I still don't understand what Jesus is asking of me here. I pray for wisdom and then courage to follow.