This statement communicates that you do not understand the "world-view" concept. It does NOT mean you need to change your views. Believe it or not, you have a world-view already, whether you want it or not LOL.
Expanding your world-view is all about critical thinking. It's a process of learning. To expand one's world-view you need to be tolerant of other people's view points and willing to learn why they think what they think. Once you have been presented with new information, you then consider that new information relative to your own opinions, and reassess your opinion. It is an active thought process... you can't just instantly "know" the answer (i.e. you don't just instantly "know" your opinion).
While this sounds very simple, for most people, it is not. The tendency for most people is to form an opinion on whatever topic is in question and then filter incoming information such that information that agrees with their previously held belief is held in higher regard than information that does not support their previously held belief. This is called an "echo-chamber" effect and it leads to self-reinforcement or "silo-ing" of opinion.