It's dogged as does it

Similar in form to the expression easy does it.

‘It's dogged as does it,’ says Isabella.
[1864 M. B. Chesnut Diary 6 Aug. (1949) 429]

It's not thinking about it.
[1867 Trollope Last Chronicle of Barset lxi. There ain't nowt a man can't bear if he'll only be dogged. ‥It's dogged as does it.]

We've got the measure of the old Boche now, and it's dogged as does it.
[1916 J. Buchan Greenmantle i.]

It was Colonel Rodgers. ‘Any progress?’‥‘Very little, it's dogged as does it, sir.’
[1965 K. Giles Some Beasts no More v.]

Related to: perseverance

Bibliography of major proverb collections and works cited from modern editions is available here.