It is always true, this statement not only can apply for happy wife, but also the happy people because they can make people life happily. Happy people have a sense of humor. They tell jokes when facing difficulties, they smile when facing bad news. For those people, they have a special genes to act positively in unexpected life, and their behavior can affect positively to their workmates, friends and partner. Life is full of uncertainty, we never know what will happen. Having a group of positive friends is always a gift in life, because they can see chance and hope for the future. They would rather give you a constructive advice than a give up plan. The only one will accompany you to the end of the day is your wife or husband, i would say nothing is more important than your partner. Therefore, a happy wife makes a happy life is always true. Thank you.@