I believe photography – like many other things one does in life – is the exact expression of who one is at a given moment: every time you compose and release the shutter you give voice to your thoughts and opinions of the world around you. So other than the obvious patience (photography is a complex medium, a voice which requires time to develop) and perseverance and the necessary humility when dealing with others, I would recommend working to become a more developed and informed individual, a more knowledgeable and engaged citizen. This will translate into a deeper more complex understanding of the world around you, and ultimately into a richer and more meaningful photography.
I have a hard time being a neutral spectator and don't know if I even want to be one. You really aren't distanced from what you're seeing, because you're there as it's happening. At the same time you're there with a function, however imperfect the function may be. Part of this function is to be a witness and to communicate!