I also choose... none of your choices. =)
The notion that you can "improve" your personality doesn't hold up when you do the research.
Your personality--your dominant patterns of thought, feeling, and behaviour--are not going to change much at all after the age of 16.
You can learn new skills or more knowledge, but you cannot significantly change your personality.
See here for more info:
Welcome to The Marcus Buckingham Company ®
For in-depth info, read the books:
- Now, Discover Your Strengths (if you only get one, get this one)
- The One Thing You Need to Know
The first book is one of the 3 books that I recommend everyone should read in their lifetime. It's not just semi-useful. It's revolutionary, mindblowing, and if you really make the effort to take the ideas to heart, it'll change the way you look at the world. Most books promise this, but this one comes through. It's only the first step in a journey, though, but you must take the first step before the second.