In the scene where Jane is in her bathtub talking to Jake, the lit candle in the bathroom window moves back and forth between different camera angles revealing that the scene was done with different takes.
When Jake is spying on Jane and Adam at her house, he peeks through bushes growing outside her kitchen window. But from inside the kitchen, his head is fully visible in the window with no bushes to be seen.
Towards the end of the movie when Jane and Jake are sitting on the swing, the chain links behind Jane move, in some scenes there are 2 extra links hanging, others show 1 hanging, and some show no extra links.
In the scene where Jane is discussing her situation with her psychiatrist, the part in her hair jumps from the middle to the side several times when the camera shot changes from the psychiatrist back to Jane.
In the scene where Gabby is about to leave home for College she sits in the Toyota Prius and the steering wheel is upright, when the camera returns to her the steering wheel has turned and is almost upside down.
In the part of the movie where Jane waits outside the Santa Barbara Medical Building for her therapist, there is a sign that says Mission Pharmacy. In real life it is a restaurant called The Wine Cask. You can see wine bottles displayed through the glass door of the supposed pharmacy.