Translation of "Forget it!" into Italian

Forget it. There's no sense giving him advice.

Lascia perdere. Non ha senso dargli consigli.

But if that meant being good at drama, forget it.

Ma se significava recitare bene, come non detto.

If you are carrying some burden, forget it, let it alone.

Se state portando qualche fardello, dimenticatelo, lasciate stare.

If it's going to take four hours from the foot of the mountain to the top, let's forget it.

Se ci vogliono quattro ore per andare dai piedi alla cima della montagna, lasciamo perdere.