Where does the character get the money to do the travelling all over the world to "find herself?"
And does she not have children? Or are they grown up? Julia Roberts is around 40, so I assume that her character is around 40? At that age, I still had children at home, although they were young teens and I could have walked away from them without getting in trouble with the authorities.
Finally, does she not have a job? Is she able to just walk away from her job and know that when she comes back, the job will still be there? Lucky!
Those are my objections to this story. Most women after a divorce barely have enough money to travel down the road to a state park and stay in a tent. And most women have children that they can't just walk away from. And most employers would not hold a job for more than a few weeks or months (I think that by law, jobs have to be held for 90 days for a medical disability? I could be wrong about this.)
If someone wants to write a novel about a divorced woman "finding herself," why not write about a real woman who has no money, a couple of dependent children, and a job that she doesn't really like, but is lucky to have in this day and age. Actually, quite a few novels have been written about women like this; I recommend many of the beautifully-written novels by Anne Rivers Siddons. (Caution, they do contain illicit sex, but it's not graphically done. Siddons is known for her settings, not her sex scenes.)
Or just read my novels (see my website!). :D I guarantee you'll be uplifted.