it only works if you force your personality and don't let her change you.

There's a difference between opposite personalities, and complementary personalities. The latter can work, and often does. The former is usually a recipe for disaster, at least in the long run. "Opposites attract" is not reflective of actual, lasting relationships.

google 16personalities

my grill and i are opposites and we're together for more than a decade. No struggle.

communication is important.