I found this in another blog:
When are you starting to date someone, make sure it is close to what you are looking for. It's much easier to change a truck into a car, than trying to change a boat into an airplane. Don't think that just because you love someone, you will be able to change them into something that is not them. Don't look it as a challenge that you can reform this person. It will be a sad mistake. Find someone that is close to what you already want, and they will be most suitable for you. You probably aren't exactly what they want either, but with good listening and time, you can become a masterpiece to them.