Soul Purpose - Do You Know Why You Are Here?

I have asked friends and a few family members this question, many said they knew what their soul purpose was. I never pushed and asked what it was , I thought that was too personal, but I felt jealous for in all I have done here I feel I still do not know what my soul purpose for being here is, or if I seriously have one. So Putting this question out there for you. Do You Know yours?