A train of thought
Definition 1 of 1
Pro Tip 1/3Maintain Focus
Describes the importance of concentration to keep thoughts sequential without interruptions. 
He closed his office door to maintain his train of thought while writing the report.
Pro Tip 2/3Mental Journey
Represents the progression of one's thinking as if going on a journey, starting from one idea and leading to another. 
Her train of thought began with childhood memories and ended on her college graduation.
Pro Tip 3/3Context Sensitive
Usage often hinges on the context, such as deep conversations or personal reflections. 
During therapy, it's important to explore your train of thought to understand feelings.