Troubles arise because we consider ourselves limited.

Troubles arise because we consider ourselves limited. The idea is wrong. In sleep there was no world, no ego, and no trouble. Something wakes up from that happy state and says “I”. To that ego the world appears. It is the rise of the ego that is the cause of the trouble. Let him trace the ego to its source and he will reach that undifferentiated Source, a state that is sleepless sleep. The Self is ever there; wisdom only appears to dawn, though it is but natural.

Ramana Maharshi.