Nasîhatnâme ( Ottoman Turkish: نصيحت نامه, Naṣīḥat-nāme) were a type of guidance letter for Ottoman sultans, similar to mirrors for princes.  They draw on a variety of historical and religious sources, and were influenced by the governance of previous empires such as the Seljuk Turks or the Mongols, as well as by early Muslim history and by contemporary events.
Nasîhatnâme became common in the sixteenth century  but built on earlier works such as the Kutadgu Bilig (Knowledge of Prosperity), written in 1070 by Yusuf Has Hacip. Early influences include the inşa literature of the Abbasid era.  Some refer to Alexander the Great. 
However, nasîhatnâme are different from Byzantine Chronographia, and were written for a different audience. 
Nasîhatnâme were even commissioned by aspirants to Ottoman government - including, in one case, by the Phanariot Alexandros Skarlatou Kallimaki, the probable father of Skarlatos Voyvodas Alexandrou Kallimaki. 
By the 17th century, a sense of imperial decline began to affect the content of these texts; more than just advocating a return to some golden age (i.e. Suleyman the Magnificent) they highlighted specific systemic problems in the empire - including nepotism, revolts, military defeat, and corrupt Janissaries. 
Nasîhatnâme typically state a clear moral reason for why they are written and presented to leaders; whether piety, or morality, or realpolitik.