Ego is the source of all things negative. Ego is the concept of self. Greed.
If 'ego' is the concept of self, that is, to an extent, a 'source' of negativity, but it's debated as to whether or not the self creates negativity, merely experiences it from an external object, or can even be perceived as 'willed' negativity-- or perhaps deterministic 'negativity' that, if it is inevitable, cannot be of much of a 'negativity' in-itself, for why moralize destined phenomenons at all?
What I'm really saying here is this: You cannot appear very philosophical when your 'truths' are merely vague cliches-- so presumptuous and broad that your thoughts all amount to superficiality.