The more you get to know people you realise its kind of everyone's flaw; staying exactly the same, for as long as possible. Standing perfectly still feels better, safer somehow; and if you're suffering, at least the pain is familiar. Because if you took that leap of faith, went outside the box, did something unexpected, who knows what other pain might be waiting out there; chances are it could be even worse.
So you maintain the status quo, you choose the road already travelled, and it doesn't seem that bad; not as far as flaws go... you're not a hopeless addict, you're not killing anyone - except maybe just yourself a little.
When you finally do change, it doesn't happen as an earthquake or massive explosion, or all of a sudden you're this totally different person; its smaller than that. Its the kind of thing most people won't even notice; unless they looked really, really close... - which many hardly ever do!
But you notice it, inside you, that change feels like a world of difference (and you hope that it is); that this is the person you get to be now, and that you are never going to be that person you were before, ever again...