struggling

I'm struggling. I have that feeling of "I'm running but going nowhere." I see my friends and most are in the junior/senior years of college and I just wasn't successful in this. I want my degree and I want to accomplish this goal but I can't even settle what I want to major in. 

There are days that I think I want to be a wedding planner. There are days that I think I want to be a designer. There are even days when I want to be a therapist. When does that light bulb go off in your head and you figure it out? I want to be an entrepreneur, my own boss. I want to write my own book and have people look at me and say, "Wow. Look at her. She did it." 

I feel like I'm looking around for anything and trying to have that ah-ha moment. I'm doing well in the current job that I have, but I know it's not what I'm supposed to do or where I will end up. Even if it's on top. 

How does someone handle this struggle? I just don't know.