Don’t let familiarity poison your ability to view future opportunities.
The longer someone has to get to know someone or something, the longer they have the opportunity to form a biased view.
Let’s take using software as an example, time will provide you the opportunity to become an expert by getting to know everything that there is to know about using the software and this will allow you to identify opportunities that others will not even know exist. Time also creates opportunity for you to understand the limitations, you start to see the things that the software cannot do.
Be careful, what you know about something or someone can poison your ability to view the opportunities around you, if that happens you cease being an expert no matter how deep your knowledge.
P.S. This principle applies to more than software, think managing people, marketing, business development etc.