“That is my right work”
The phrase names the work Ruskin believes best fits his actual abilities, separating a personally appropriate vocation from duties he feels forced to assume by public distress.
Source details
Time and Tide by Weare and Tyne, Letter XIII, “The Proper Offices of the Bishop and Duke; or, Overseer and Leader,” paragraph 69, printed page 46 in Project Gutenberg #31196. Ruskin says “That is my right work” while describing his own preference for drawing hawthorn, primrose, birds and flowers instead of being forced by public distress into political writing; this is local autobiographical vocation context, not a universal career prescription.