Is failure the mother of success?

if you fail a lot, you have to try harder until you will be success....

what kind of solution would you use the expression?
>>> face the bed economic , my sister was laid off and she was looking for a new job, but no one wanted to hire her

Do not pull your egg in the one basket.
>> My mother has an experienced stockbroker who claim to be a master of speculation.
it is wiser to divide her budget into many small groups instead of placing her bet entirely on the same company.

Venturing a small fish to catch great one.
my sister's coffee shop was on the verge of bankruptcy. she thought her budget no longer enough to sustain the operation of shop.A friend told her that she should let the public have a taste of her recipe by giving out free samples instead of insisting on selling her coffee for big buck.