The meaning of "at a crossroads" is:
The definition of "at a crossroads" is:
(idiom) at a point in one’s life where important decisions about the future must be made
Thomas was at a crossroads when he had to decide between going to law school, medical school, or barber college.
When my boyfriend asked me to marry him, I felt like I was at a crossroads, and I didn’t know what to do!