Chapters in books are useful. They allow you to put a full stop at the end of the current part and begin afresh. You get to build on the story so far, benefiting from the experience of the characters, but you’re not limited by the story so far: in the next chapter anything can happen.
Action: Sometimes it can be helpful to figuratively (or literally) draw a line between where we’ve come from and where we’re about to go next. Looking forward, visualise how you want to think, feel and act in the next chapter. Then, step over the line.