Every day we interact with objects, places and sensations that affect the way we think and feel. This can be used to the writer's advantage by planting symbols in the reader's path to reinforce a specific message, feeling or idea.
Look at the setting and the character's state of mind, and then think about what you want the reader to see. Is there a descriptive symbol or two that works naturally within the scene to help foreshadow an event or theme, or create insight into the character's emotional plight?
A fork in the path
Multiple pathways or routes
Rivers: upstream, downstream
Choosing a place to nest/burrow
Obstacles: rocks, fallen trees, etc in route
Looming foul weather
Direction: North, South, East, West
The presence of a rival
Danger in the animal kingdom (fight, or flight?)
Truth or lie
Road trip routes
Post-secondary education or workforce
Marriage or singleness
Children or no children
Right or left
A crumbling relationship/marriage
Real Estate Market
A question mark
Destination boards at the airport/train station/etc.
Robert Frost's "The Road Not Taken"
These are just a few examples of things one might associate with Crossroads/Choices. Some are more powerful than others. A fork in the path is a strong symbol, and likely will not require reinforcement. However, a menu might not foreshadow Crossroads/Choices on its own. Let the story's tone decide if one strong symbol or several smaller ones work the best.