I feel like i'm too dependent?

I am a 17 year old girl and i feel like i'm too. Dependent and like a child.
By being like a child, i don't mean childish and foolish, but just. Not being able to take care of 'adult business" if that makes sense.
I see other kids and they are already joining in with their parents in talking about stuff like bank accounts and interest and mortgage and all that stuff and i have absolutely NO IDEA what they're talking about and i'm not really into it.
Also stuff like credit cards, or registering for stuff and stuff about driving and all that stuff.
but that makes me feel really bad because i feel like i'm not taking control of my life and still am acting like a child.
i've never really had a plan for my future. Always thought that i would plan it when it gets there. Because i've always been able to plan things when it is time to plan it so it's never been much of a big thing.

I was feeling kind of ashamed about all of this and since my mum has to always drive me everywhere that i have to go, i felt so dependent and like a kid.
So i decided to get my permit and i'm researching about it and all of that business.
But how can i start becoming more independent and start doing more things independently?
I have social anxiety, i guess which causes me to be scared of society and prevent me from doing things in my daily life. But it's nothing too serious.

Are all 17 year olds like. Really independent and everything?

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