Select the most appropriate proverb that conveys the meaning given in brackets in the following sentence, to fill in the blank.
Susan should focus on the positive aspects of her marriage instead of constantly complaining about her husband's shortcomings. After all, ______________ (People should focus on the good aspects of something, rather than obsessing over the imperfect parts).
1
a bird in the hand is worth two in the bush
2
you can't make an omelet without breaking eggs
3
every cloud has a silver lining
4
beauty is only skin deep