do one's thing (L.A. is so spread out, most Canadians don't have time to socialize, everybody's busy doing their thing. You think we're getting together over a Tim Horton's coffee and maple syrup pancakes? -- каждый занимается своим делом ART Vancouver); stick to one's last; up one's alley; mind business; go about business; mind one's affairs (Aly19); paddle your own canoe (He decided to paddle his own canoe and set up his own business. Interex); mind one's own business (artery); hoe one's own row (Foote was not a loner, but one who had learned to hoe his own row in virtual silence. Alexander Demidov); keep to oneself (Liv Bliss)

amér., makar.

hoe one's own row

clich.

mind one's business (This little fella came out of nowhere this morning. I was minding my business taking pictures of the colourful houses of Trinity when I caught some movement from the corner of my eye. This beautiful creature emerged from under a house. -- Я занимался своим делом -- фотографировал колоритные домики Тринити -- когда боковым зрением заметил ...

x.com ART Vancouver)

entr.

mind one's work

idiom.

cultivate one's garden (z484z)

idiom., inform.

butt out (В.И.Макаров)

inform.

wind one's neck in (MichaelBurov); wind their neck in (MichaelBurov)

makar.

attend to one's business; mind one's own to stick to one's own knitting; mind one's to stick to one's knitting; stick to one's last

заниматься своим делом ply one's trade;

idiom.

ply one's trade (Andrey Truhachev)

заниматься своими делами

génér.

attend to one's affairs (maystay); go about one's business (A.Rezvov)

Игорь Миг

go about one's work

citat.

cultivate one's own garden (To take care of one's own needs before trying to take care of others: "The mayor ought to cultivate his own garden before he starts telling the governor what to do." This is the moral of Candide, by Voltaire : take care of your own, and the world will take care of itself. VLZ_58)

idiom.

tend one's own garden (Go ahead and tend your own garden first before moving on to anyone else's plot of land. VLZ_58)

inform.

take care of business (также сокращение TCB • What I want is for you to stay right where you are and TCB, darling. cristinity); TCB (сокращение от take care of business • What I want is for you to stay right where you are and TCB, darling. cristinity)

makar.