Jason Wall has an excellent article about love and pride, and the semantics of these and related terms. He provides a good analysis of related problems and gives lots of scripture to back up his points.
The first sin was pride and it led to the first lie ever told. My pastor once told me that at the root of every problem you will find a lie. To overcome those problems you have to find the lie and establish in your heart, not just in your mind, the truth. This is why Paul exhorts us to think of things that are true.