An obligation has a source. It may be an internal power, it may be an external one. Ideally, having and feeling obliged ought to be from an internal standpoint, as the character wants standing purity in being self.
That which I do wishes to coincide with what is expected of me by my peers and society. My desire is my obligation.
What is my social role in surroundings which are not naturally married with my essence, my inner adjustments and evolution, and my character traits?
to oblige seems to be a constant shaking of the universe.