In 1667 Pasek married a 46-year old widow Anna (née Remiszowska, primo voto Łącka) who, much to his dismay, failed to bear him any children.

From 1670 onwards he dealt with the shipments of grain from his leaseholds at Olszówka, Miławczyce, Skrzypiów and Smogorzów in Lesser Poland down the River Vistula to Gdańsk.

His later years were spent fending off lawsuits that arose from his various excesses and conflicts with neighbours which eventually resulted in him being exiled, however, the sentence was never enforced.

Pasek died on 1 August 1701 in the village of Niedzieliska, Lesser Poland Voivodeship the year after the death of his wife and he was buried in Budziszewice near to his birthplace.

Towards the end of his life (around 1690–1695) Pasek wrote an autobiographical diary, Pamietniki, a copy of which was found in 18th century with extracts printed in 1821 and a full work published in 1836 by Edward Raczyński, making him posthumously famous.

He hated the schemes of Archbishop Prażmowski ('the one eyed bishop who saw only evil') and Queen Ludwika to place a Frenchman on the throne of Poland, and rejoiced when the Diet elected Michał Wiśniowiecki and subsequently Jan Sobieski as King ('Vivat Piast') and recognised the problems that electing foreign Kings posed to the security and politics of the Commonwealth.

He mentions his own role in the Swedish and Muscovite wars and the politics surrounding them and writes colourfully about the military life, showing soldiers primary motivations, like curiosity, desire of fame and loot.

Despite this Pasek, by his own admission, frequently gets into quarrels with others, and shows disregard for non-Catholic Christian denominations; for example, he describes Polish soldiers stealing prayer books from faithful Danes during a service at a Lutheran church in Denmark, and the highlights rejection of Protestant souls from heaven as retribution by St. Peter for their desecration of Polish churches after an explosion at a besieged Swedish occupied castle threw the remaining defenders into the air before they fell into the nearby river.

He offers wearied advice on marriage in light of his troubles after his marrying a widow with five step-daughters, and advises young men to take every chance they can to participate in local Diets in order to learn etiquette, law and politics.

[3] From May 2024, the only surviving early copy of the work, dating from the first half of the 18th century, is presented at a permanent exhibition in the Palace of the Commonwealth in Warsaw.

[4][5] His diary has sometimes been called the “Epos of Sarmatian Poland”, and inspired a number of 19th and 20th century Polish writers, such as Adam Mickiewicz, Juliusz Słowacki, Henryk Sienkiewicz, Teodor Jeske-Choiński, Zygmunt Krasiński, Józef Ignacy Kraszewski and Witold Gombrowicz.

Adam Mickiewicz devoted two of his lectures on Slavic literature to him; Juliusz Słowacki used his figure in "Mazepie", where the author of 'Memoirs' on the porch, 'With a serious parrot': "And he stood with a large piece of paper - well!

Pasek's influence is also visible in the literature of the 20th century, e.g. in poetry Jerzy Harasymowicz, Ernest Bryll, in the novel "Trans-Atlantyk" (1953) Witold Gombrowicz (a parody of a noble's tales), in the stories of the author of "Szczenięcych lat" Melchior Wańkowicz, and in the work of Ksawery Pruszyński and Wojciech Żukrowski.