Politicians are often accused of changing their stances on issues too often. The cynical view is that they're simply trying to pick a collection of beliefs they think will get them the most votes, rather than establishing a consistent ideology.
But the world is changing quickly, and many of us would be better off changing our minds more often to reflect new information.
It's hard to let go of existing beliefs when we use them as the basis for our identity. But changing our mind should be a badge of honor. It doesn't make us look flaky — it shows others that we're capable of growth.
When we let go of preconceived notions, we can see the world more clearly for what it is.