Everyone says this and I know why. Because it is easy to say.
Follow your passion and you will never work a day in your life.
This is easier said than done. Because by following you passion you have to work harder than everyone else. The world is competitive and more than likely there are tons of people with the same passion as you. If this passion is replacing your job then you have to be better than everyone else. Not to say that everything is a competition but business is.
Your passion must be unique to you. What makes you different from everyone else?