Murder: Forgive as Forgiven (Colossians 3:1-17 (LD 40)

We can think that it is easy not to commit murder because all you have to do is not take someone's life. If it were that easy then we could see the Ten Commandments as a simple to do list of ten things to do each day. However it seems that it might be a bit more complicated than not literally taking a human life. So, how complicated or big is this issue?  How do we know we conforming to the Lord?