Learn Hardcore Turkish: Üşenince işleri erteleme; tam tersine küçük adımlarla başla. - Don’t postpone tasks when you feel lazy; on the contrary, start with small steps.

Üşenince = üşen- (to feel too lazy/“can’t be bothered”) + -ince (when/once). It means “when you feel too lazy.” The subject of this “when”-clause is the same as the main clause—in this sentence, implied sen (you).

Why is there no subject pronoun? Who is being addressed?

Turkish imperatives don’t need a subject pronoun. Erteleme and başla are 2nd person singular imperatives, so the subject is implicitly sen (“you” singular/informal). For plural/polite you’d say ertelemeyin / başlayın.

What exactly is erteleme here—a noun or a verb?

Here it’s the negative imperative of ertelemek: “don’t postpone.” The suffix -me/-ma also forms nouns (e.g., erteleme = “postponement”), but in this position and context it’s clearly the imperative.

Why işleri and not işler?

İşleri = iş + -ler (plural) + -i (definite accusative) = “the tasks/work (as a whole).” Definite direct objects take accusative. Bare işler would be more indefinite (“some tasks”) and is less typical here; many speakers might also use mass-singular iş: Üşenince iş erteleme.