Live and let live / There's nothing so queer as folk
Hay de todo en la vina del Senor (lit. there is/you find everything in the wine of the Lord)

It's a question of swings and roundabouts What you lose in / on the swings, you gain in the roundabouts
Lo que se pierde en una casa se gana en otra (lit. what you lose in one house you gain in another)

Hope for the best and prepare for the worst
Procura lo mejor, espera lo peor y toma lo que viniere
(they add - and take what comes)