optimism

Don’t sell the bear’s skin before you’ve caught it.

used to mean that

If you laugh before breakfast you’ll cry before supper.

It implies that

In the end things will mend.

expression with

Do not grieve that rose trees have thorns, better rejoice that thorny bushes bear roses,

advices to

All is for the best in the best of all possible worlds.

shows

However long the night, the dawn will break.

used to mean that

Hope for the best and prepare for the worst.

suggests that

sing before breakfast, cry before night

suggests that