I your wife gets grumpy and cranky or throws a huffy puffy cake, don't let it be contagious, keep your cool, be calm work it out. Remember that moment of falling in love, the time you really looked at her and thought god she is beautiful. then go wrap your arms around her. Remind her of your honeymoon on the sailboat in the caribbean, or whatever your special moments together were. Think of her often, show her this, make her a special lunch or buy a couple specialty chocolates while you are out running errands(it is the little things). Randomly get a some nice flowers for the kitchen table. Make plans big or little together. Most importantly have fun together in the bedroom, in the house, and when you are out and about or on vacation. Everyone has ups and downs, life can be hard, it is up to the two of you to see each other through. Congratulations!!!