With each other.
The Holy Bible says "a time to laugh and a time to weep."
Yes, there'll be plenty of times when things are tough...that's part of living.
Those times you share with each other when you laugh together are precious.
They turn us into more understanding people. Without any humour life would lack colour. Doctors tell us that a good laugh releases endorphins which give us a sense of well-being. We all need a good dose of that, preferably every day. A good hug and a kiss do the same for us. It tells the other person you care enough to enjoy their company and a little lighthearted fun goes a long way to draw you closer together.
So, no matter what life throws your way, ask the Lord to help you take one day at a time as Jesus advised, and look for ways to find that hidden laughter deep inside.
That's all I have to say. May God touch your heart and lighten your load and teach you to smile today.