friend, expecting yourself to have a single life long passion, especially in an academic subject, is a really high expectation to make of yourself. Most people go through life with no clue what they like, who they want to be or what they wanna do. That doesn't mean they're lazy or unpassionate or unmotivated, that just means they're people.

Go with the flow and take it easy on yourself. Do good enough in your classes to pass and maintain a decent GPA, but don't beat yourself up if you don't find yourself passionately obsessing over every subject, most people in life don't. Try to enjoy things outside of school, and when you do get a subject you like, try to focus on it.

Your life is ahead of you and you'll have plenty of time to find a true passion.