Faith and Deeds

In James 2: 19-23, we read about faith and deeds. What does that mean, what does God want/need of us?
"You can say you have faith, for you believe that there is one God. Good for you! Even the demons believe this, and they tremble in terror, how foolish! Can't you see that faith without good deeds is useless? Don't you remember that our ancestor Abraham was shown to be right with God by his actions when he offered his son Isaac on the altar? You see, his faith and his actions worked together. His actions made his faith complete. And, so it happened just as the Scriptures say: "Abraham believed God, and God counted him as righteous because of his faith."
We no longer have to labor for our salvation! Many Christians, run around looking to be the next boy scout, the next good Samaritan, the next Rahab. You don't have to run around looking for opportunity to do good; that is just being an opportunist. You don't have to be counting your deeds either and marking them down somewhere so that you can point to them if/when the time comes. This does not mean that if you see a need, you should not at least try to fill that need. If someone comes to your door and asks for something, give it freely. Point being, if you have not already got it, is that deeds come from the heart, as in a reaction not as a calculation. Abraham did not calculate what he should do, he reacted with his heart for God.