Take the situation in hand

Take matters into one's own hands / Take the bit in one's mouth


Prendere in mano la situazione

Prendere in mano il pallino


Meanings
Fig.: to take control of a situation and manage it

Examples
If you want things to work out, you have to take matters into your own hands
Se vuoi che le cose vadano bene, ho paura che debba prendere in mano la situazione tu stesso

Just wait; you'll see the results when we take the situation in our hands
Aspetta solo quando riusciremo a prendere in mano il pallino e vedrai i risultati