We hear motivational speakers say this a lot follow your passion. To me to follow your passion is not about following a dream or a desire thous can definitely help you t find your passion but are not following it.
To me following your passion means that you are following the prompts of the spirit to lead you to where you can be of most service with the way the spirit wishes to come through you. Maybe that is through writing or talking, singing or dancing whatever it is that is what we want to follow.
A passion comes from inspiration and inspiration is from spirit so you can know when you are following your passion because you are in a flow you seem to be at the right place at the right time and each time it is because you are there to continue the great plan spirit has for all of us.