thineself

In these manner accustom thineself to breathe freely and imperceptibly, as thee proceeds.

1795, Rudiments of Constructive Etymology and Syntax, London: […] T. Knott, […] G. Nicholson, […], section IV, page 138

Thou wilt thineself no doubt deny / The soldiers’ wants to supply.

1867, S[usan] E. D. Smith, quoting James Levi Pfluger, edited by John Little, The Soldier’s Friend; Being a Thrilling Narrative of Grandma Smith’s Four Years’ Experience and Observation, as Matron, in the Hospitals of the South, During the Late Disastrous Conflict in America, Memphis, Tenn.: […] the Bulletin Publishing Company, page 283

Teach in thine own household what you would have others do to thineself.

1888 October 21, Cook, “Correspondence”, in Union Pacific Employes’ Magazine, volume III, number 10, published November 1888, page 317, column 2

Go, carrion thineself among the tombs; go and ordure thineself in other filthy things and leave true philosophy to real philosophers. Thou believest thineself to be a philosopher; do not deceive thineself.

1889, “Invectives Against a French Physician”, in T. C. Minor, transl., The Evil that has been said of Doctors: Extracts from Early Writers, Cincinnati, Ohio: […] Lancet-Clinic, collation of Le mal qu’on a dit des médecins by S. J. Witkoski [Gustave Joseph Witkowski], chapter XVII, pages 52–53

Beecher, Rev. Thos., Let Another Man Praise Thee, Not Thineself.

1893, “Miscellaneous”, in List of Duplicates in Michigan State Library for Sale or Exchange, page 6