It depends on the person, honestly. But... overall, our experiences make us who we are.
If you're concerned about being different once your memories have returned, I wouldn't worry about it. The experiences you've had since losing your memories have shaped you into the person you are today. Those experiences aren't going to disappear just because you've regained what you lost.
<Composing>
If you're concerned about being different once your memories have returned, I wouldn't worry about it. The experiences you've had since losing your memories have shaped you into the person you are today. Those experiences aren't going to disappear just because you've regained what you lost.