["My wife's out of town right now on business. She has to go on these trips a few times a year. I miss her a lot."]
That's completely understandable. Have you tried distracting yourself with hobbies or productive chores?
My wife is on a business trip right now. I miss her quite a bit but I know she works these kind of jobs to help provide for our household and I greatly appreciate it. I love her so much.