。
Stop putting off your job search.
Literal
Job search [object-を] postponement-[as-にする] [nominalizer-の] [topic-は] stop-[gentle-command-なさい].
A gentle admonition. ~のは+verb is the standard nominalization pattern for 'the act of X-ing' as a sentence element. やめる ('to stop, to quit') takes the nominalized clause as its object. 先延ばしにする is the set phrase for 'postpone, put off,' built from 先延ばし ('pushing forward') + にする — a stock workplace and life-advice expression. ~なさい is the gentle parental imperative.