On the way to work have you ever thought about a conversation you are going to have later in the day? You thought about how it would likely go, but then also thought of another direction or two the conversation could take? If you have then you have the beginning skill of what it takes to be a futurist.
It is not that hard
In a book I am reading, Smarter Faster Better by Charles Duhigg, the author says that “… experiments show that anyone can learn to habitually construct mental models” and that is what a large part of being a futurist is all about.