Don't stir the pot.
No remuevas la olla.
Don't kick a man when he's down.
No hagas leña del árbol caído.
Don't count your chickens before they hatch.
No cantar victoria antes de tiempo.
Don't bite the hand that feeds you.
No muerdas la mano que te da de comer.
Different strokes for different folks.
Para gustos los colores.
