ACTIONS

Inaction breeds doubt and fear. Action breeds confidence and courage. If you want to conquer fear, do not sit home and think about it. Go out and get busy. — Dale Carnegie

 There are two general types of people: leaders and followers.

Leaders are those who take charge of a situation or group. They want to be in control. They have analytical skills to motivate people around them towards a common goal.

Followers are those who don't want to be in charge. They do not want the responsibility to oversee or control the collective work group. They would rather be told what to do rather than be proactive and seize the moment.

Leaders: Jack, Ben, Widmore, Eloise, Keamy, Sawyer (only by default), Horace.

Followers: Hurley, Charlie, Claire, Kate, Sayid, Sun, Jin, Boone, Charlotte, Daniel, Dogen, the Others, Dharma workers.

Then there are few characters who were independent and did not want to lead or follow: Rose, Bernard, Juliet, Michael, Shannon.

All these characters had continuous fears and doubts about themselves:

Hurley: being liked, respected, useful.
Charlie: being alone, addicted, useful.
Claire: being a mother.
Kate: having a commitment, being responsible or accountable to anyone.
Sayid: being evil, inability to change, to find happiness.
Sun: being dependent, weak, controlled.
Jin: being poor, ashamed of his family past, respected. 
Boone: being acknowledged, respected, trusted, useful.
Charlotte: finding a purpose, a talent
Daniel: being acknowledged, respected, and worthy of affection.
Dogen: being punished, martyred.
The Others: belonging to something
Dharma workers: belonging to something.

Their LOST experiences did involve those characters coming face to face with their fears and doubts. Most fell back to the comfort of their habitual inaction. Their fate was held by the people around them. They could not trust themselves to change to become fully confident and courageous in their own abilities. Hurley wept in fear when Jack passed on the guardian role to him. Claire never reconciled her fear of motherhood when she left the island as a zombie shell of herself.

The characters who were followers were the most "lost" in the LOST bunch. They would defer decisions to other people around them who had stronger opinions, even though they knew that it was the wrong course of action. Kate was especially keen on doing this mental gymnastics as she attempted to follow many opposing leaders at the same time (Jack and Sawyer dynamic.) As a result, she never grew as a person. It solidified her personality of being a runner, someone who avoided responsibility or accountability (the hallmarks of leadership).

But in the end, curiously, both leaders and followers who took two different paths in their island adventures and decisions, wound up at the same place.