It will start with hobbies, some people like to do things that they like to do most of the day and when it becomes a habit they won't missed any day not to do it. Some people don't have a passion on something they want to do. Others will find it just a daily activities and will just do it for some reasons. To find something that will make you into passion of doing it is like a teacher for example, You studies many years to become a teacher and then you took the exam and then you pass. When you look for a job, and you get hired, you start teaching now, but then it's not passion yet not unless you doing it with wholeheartedly without any demand or expecting in return. And it becomes passion, because you can't live the day without it. That's what I thought of finding your passion,something you love to do day by day.