Spiritual formation is for everyone. Just as there is an 'outer you' that is being formed and shaped all the time, like it or not, by accident or on purpose, so there is an 'inner you.' You have a spirit. And it's constantly being shaped and tugged at: by what you hear and watch and say and read and think and experience.
The human longings that are deep inside of us never go away. They exist across cultures; they exist throughout life. When people were first made, our deepest longing was to know and be known. And after the Fall, when we all got weird, it's still our deepest longing - but it's now also our deepest fear.