Why is Lee So Easily Manipulated?

In Libra, Lee becomes a pawn in this secret plan to "assassinate" and miss the President. From my point of view, he's being manipulated this entire time. He never really knows what's going on, but he goes along with it. Why, I ask you? What makes Lee so easily malleable? Why is it that everyone can control him. to an extent of course, but still. Lee moves from place to place, sometimes on his own accord, but sometimes based on the talk of others. He let's people tell him what to do, or at least takes their suggestions and follows through with it. Why?

I think it's because Lee is desperate to fit in somewhere and make a name for himself. From his childhood, he was always displaced. No matter where he lived, people made fun of him. Lee just wanted to be liked and accepted by them, but he was turned away. So, in an effort to find himself and find his place, Lee turned away from the U.S. and headed off to Russia. But even there, he wasn't a part of anything. He thought he was, but in truth, he still didn't find who Lee was and where he fit in the world. So when he comes back to the U.S., a different man but still a man who doesn't quite know who he is, he's easily taken under anybody's wing.

Lee just needs to find himself and his niche. We've seen him try several different things, a military man, a U.S. citizen, a Russian citizen, Pro-Castro, communist, socialist, assassin, etc. The list just goes on and on. I really think that Libra is about Lee trying to find himself and where he belongs, but because he's so desperate to find all this, he'll take on any role and go anywhere and do anything, because it just might end up being what he needs. And for that, I feel sorry for him. You know, Lee really wants this, and he tries so hard to get it. He goes through not only emotional pain but physical as well. Those shots he fired at himself? A cry for attention, yes, a cry for something because to Lee, without knowing who he is or where he belongs, he doesn't have anything. And that's what I feel is so sad about his character; that he's such a lost soul that he will go to the ends of the earth by any means necessary to find who he is and where he truly belongs.