Habibzadeh Nasim, How Long a Motivation May Last?, Journal of Human Psychology, Volume 1, Issue 2, 2019, Pages 11-13, ISSN 2644-1101, https://doi.org/10.14302/issn.2644-1101.jhp-19-3010.
(http://oap-journals.orgjhp/article/1157)
Keywords: Motivation; time; hardship; endurance