Feeling is an internal sense of how things are, which resides outside of the quantifiable realm of reason and data.

It’s an instinct, much older than reason; the latter evolved to replace it with more precise and reliable tools, like the scientific method and analysis. 

That is a pity, because feeling is a sense, not a method, and there is nothing gained from dismissing it as useless superstition. Far removed as we are from our atavistic roots, we still find usefulness in the fight and flight response and our snake aversion. Feeling is just a more sophisticated form of that.

In the negative, it works as a subtle warning, an omen, often dismissed at its owner’s peril.

In the positive, it anticipates the joy of reaching your dreams, and actually works to fuel them, as they happen.