Walt Disney was a dreamer. Some would say he was unrealistic. Some would say he was unreasonable.
But without his dreams, there would be no Mickey Mouse. No Snow White. No Disneyland or Disney World.
If you have big dreams, people are going to tell you that you can't do it or you are being unrealistic.
Remember, when someone tells you something can't be done, they are talking about their limitations, not yours. Don't listen to them. Take your shot so you don't have regrets later in life.
People who create change don't listen to the negative people. Block them out and find ways to make things happen.