Кому на месте не сидится, тот добра не наживет

A man that keeps changing his job and moving from one place to another will never accomplish much

Cf: A plant often removed cannot thrive (Br.). A rolling stone gathers no moss (Am., Br.). A tree often transplanted bears no fruit (Am., Br.). A tree often transplanted neither grows nor thrives (Am.). Trees often transplanted seldom prosper (Am.)