Some calls I catch it, the customer mentions a headache and I realize we sell the fix. Other calls I walk out and only later think, I should have offered them that other thing. I know there's more I could be helping with, but I can't seem to spot it every time.
More people experience this than they realize.
You can sell customers more, but you don't catch the chance every time.
If this sounds familiar, the Library can help you find the bigger picture.