Originally Posted by Chiefnj
Locke is slowly helping each member of the island unlock their own baggage and vices. Boone's caring for his sister, Michael finally becoming a father figure and hero for his son, Charlie kicking drugs, Sawyer's guilt over killing an innocent man.
Locke's character seems to be based on the British philosopher Locke who felt that everyone is born with a blank slate (tabula rosa - the name of the episode with Lock's flashback) and all of our ideas come about from experiences with the physical world and our knowledge comes from experience. To help get past their problems each person on the island must have some form of an experience which the island is helping create - Boone's dream about his sister, Sawyer's confrontation with the boar, Michael saving walt from the polar bear.
That's my take anyway.
I know everyone seems to have a reason to want to stay on the island, and Locke seems to be the one with the most purpose in regards to that. Maybe they won't have any major breakthroughs until Locke "lets them" -- in other words, not until Locke is done healing everyone.