because you know that it is going to be a huge leap ahead, and you need all the strength that you need in order to take that leap. what happens after is unknown, you may have faint visions on what it may be like, but you never know for sure. being optimistic is one, but being brave and strong to do so, is another. the past had prepared you to take the leap, but the courage is still not enough to push you through. you stand there, looking back, longing to stay where you are, then looking forward, knowing it is there that you belong, and everything at the back, will remain there.

sounds like how a dead person with soul still wandering around the surface of the earth, unsure of what to do.

yeap. ghost whisperer and several other dramas somewhat similar to that, has given me the idea. :P