Which proverb means "to not judge something or someone by their appearance, but rather by their true qualities"?

Which proverb means "to not let something small ruin your day"?

Which proverb best completes this sentence: "Don't put all your eggs in one basket, ________________"?

Which proverb means "to make the best of a difficult situation"?

انتھ بھلا تو سب بھلا