Disagree, my friend. I used to think this way, but now I think Walt was always ####ed up and this whole story is about him becoming who he always repressed.
My evidence? Almost nil. But that business he left before it got big is sticking out like a sore thumb.
I think he became "a normal guy" by forces out of his control (basically, he didn't have the gonads). Having cancer (there's a kinda sick freedom that comes with that), cooking meth, and killing people have let the real Walt come out.
I always felt like the other two screwed him somehow, either personally or professionally and they'd offered him that "in" out of guilt.