R is for Relationship
June 21, 2018
Z is for In the Zone
August 1, 2018

Obligation

ob·li·ga·tion
äbləˈɡāSH(ə) noun
plural noun: obligations
an act or course of action to which a person is morally or legally bound; a duty or commitment.

synonyms: duty, commitment, responsibility, moral imperative; More
the condition of being morally or legally bound to do something.

a debt of gratitude for a service or favor.

Pay it forward is an expression for describing the beneficiary of a good deed repaying it to others instead of to the original benefactor. The concept is old, but the phrase may have been coined by Lily Hardy Hammond in her 1916 book In the Garden of Delight.

"Pay it forward" is implemented in contract law of loans in the concept of third party beneficiaries. Specifically, the creditor offers the debtor the option of paying the debt forward by lending it to a third person instead of paying it back to the original creditor. This contract may include the provision that the debtor may repay the debt in kind, lending the same amount to a similarly disadvantaged party once they have the means, and under the same conditions. Debt and payments can be monetary or by good deeds. A related type of transaction, which starts with a gift instead of a loan, is alternative giving.

Wikipedia

An obligation is something you may not like or even enjoy doing but you do it out of respect or some profound sense of duty. 

Urban Dictionary