In more character-driven books (where the internal journey of the main character is important), the final scene isn't just a way to ease out of the story, but an essential last chance to show how the internal conflict is resolved in some actual but symbolic action. This is why the final scene (after the climax) is often called "the resolution scene," because it shows the resolving of the internal conflict. (The scene doesn't RESOLVE the internal conflict-- that's done through the process of the entire plot-- but this is your chance to show in some concrete and yet symbolic way that the conflict is resolved and that has some measurable effect on her life.)
BUT... it probably helps to think this scene through and make sure you've set this event up and aren't undercutting the significance.
For example: Let's say you see Joan's journey as something like "alienation to reconciliation". The final scene might be her visiting her mother's grave-- see? Reconciled to Mom.
However, if she has been going to Mom's grave every year on Mom's birthday, this gesture loses its force. You've undercut the power of it in your setup... yes, even if you make a big point that this is NOT Mom's birthday. Come on, "Visiting Mom's grave on June 20 instead of July 19" doesn't show a real journey ending.
But if she's been unable to go to Mom's grave at all, out of guilt or anger or whatever, then her going to the grave at the end will show a real change.
Let's try another. I'm a sucker for stories where a cynic is reminded of the importance of whatever by association with an innocent. So here's a scenario:
A handsome and cynical rogue of a space pirate (sigh... you cannot believe how many of my buttons just that description pushes) has won a pretty little ship in a cardgame. He won it from, I don't know, the fellow that built the ship, or something that indicates a deeper connection between the first owner and the ship than Pirate has. (Makes me wonder why the original owner gambled it away then... but that's another story.)
Innocent youngster stows away on the ship. He/she is being chased by bad guys. But his/her innocence, though a subject of amusement to Pirate, ends up winning the day, and Pirate ends up less cynical because of exposure to the blushing naif.
Final scene after bad guys are thwarted: Pirate says, "I'm giving the ship back to the original owner."
Now see how this loses force if he says (and it's true), "I always planned to give the ship back after this voyage." That means that the exposure to the innocent and the events of the plot didn't change him. He's just following through with the planned return of the ship.
But let's change that. He NEVER meant to give the ship back. He was going to use it to secure his fortune and fame as a pirate. But then, after exposure, etc., he has changed. In the last scene, he turns the ship around (and notice that an actual action towards giving it back is going to be stronger than him just saying he'll give it back), and says, "Okay. It's his ship. I'm taking it back to him."
That is, set this up so it's a real change in his plans, in what he thought he was going to do, in what the man he used to be (when the story opened) would have done. Only then will the resolution event have the symbolic significance of the end of the journey.
And I want to stress again that this should be An Event-- an action on his part, not just a thought or change in attitude or decision or avowal, but an action that concretely shows that. Not "I love Mom again," but going to Mom's grave. Not "I'll give back the ship," but turning the ship around and heading for the owner's home planet.
Now one question: If you were writing this, would you go back and make it clear that he had cheated in the card game to win the ship? Or would you have it be that he won it fair and square? (No right answer here-- just your thoughts on which would work better from your perspective.)