Future = Career = Future

I'm so stressed out these days.
I have no idea what my future will be like. I want to start my career. I want my career is something that I enjoy to do. I want to do something that I can inspire people, something that I can do for life, and something I can do everywhere.
The question is, what is that?
I've been desparately looking for the answer. From internet, friends, books... However, I still haven't found my true passion.
Nursing, do I really like taking care of people?
Engineering, does it belong to guys only? Is it worthy to spend two years for the A-level beforehand?
Lawyer, powerful. But can I really taking care of the tuition fee?
Accountant, tuition fee is cheap. But do I really enjoy having numbers around me everyday?
English teacher, I love English. However, can I teach English in overseas?
What else?
Meeting the minimum criteria of the college/university and tuition fee are my main concerns.
My friends and my boyfriend Jun encouraged me to take the nursing. And I actually don't mind taking nursing too. However, my SPM didnt meet the minimum criteria of the colleges (stupid education system and why the heck the education is so freaking expensive there?). So I have to spend two years taking the A-level before taking the nursing. Is it worthy? I'll be 30 by the time I graduate and become a nurse. On the other hand, my family don't support me about going for nursing. They said it doesn't suit my personality. Do they really know me or they don't? I'm confused.
So tressed out.
I can't change my past. But I can choose my future. And I want my future to be right because I have done enough mistakes for my past and I'm not going to make mistakes again.
God, I cannot do this alone and I need for help. You need to show me how to find the answer.
What am I meant to be?