It May Not Be Your Passion If:
#9 - Pursuing your passion cuts you off from family and/or friends.
It's not that the people close to me have to be an active and equal partner in my passion(s). They're probably thankful I don't bore them with every minute detail. Still, there should be some link, even if it's acknowledgement, among my family and friends. However, if I hear "This drive to become the best [insert passion] in the world is making you cancel all your outings, and you're becoming a stranger to your family," that might be something for me to look into. No one's told me that yet. But I always have to watch for that possibility.
#1: You're in love with the idea of your passion, but you can't stand the component parts.
#2 - You and your passion have a long distance relationship (and you aren't willing to move.)
#3 - Pursuing your passion clashes big time with your personality.
#4 - In pursuit of your passion you end up doing things that might be hazardous to your health.
#5 - You say it's your passion, but you spend 100% of your "free," non-work time doing just everything else BUT working on what you say you love.
#6 - In considering your passion, you experience "Klondike Thinking."
#7 - You go into debt because the financial costs of practicing it are way too high.
#8 - You don't believe your passion's barriers to entry pertain to you.