The term Nitnem in a generic sense refers to the daily discipline (nit = daily; nem = rule, norm, regularity) of a Sikh.
Over time it has acquired a specific connotation in the Sikh tradition, referring to the daily recitation of the banis by an initiated (Amritdhari) Sikh as prescribed in the Sikh Rahit Maryada. According to the Rahit, a Sikh is required to do, at minimum, Japu, Jap and 10 Savaye (sravag sudh samuh) in the early morning, Rahiras at sun set, and Sohila before going to bed. Reading more banis than this is a matter of personal choice and conviction.
What is your daily Nitnem?