I will expand on my previous post where I quoted someone from Reddit saying basically that no one knows what to do with their lives and when you try something you often build more enthusiasm for it.
I think that this is something that is very true. If you bring passion to your job (whatever it is – garbage man, graveyard shift shelf stocker, financial analyst, etc), you will over time grow more excited about your work. Your expertise will deepen in your area. You will evolve to become that person.
The worst thing you can possibly do is to sit and wait for the “perfect career”. That will never come. Try a flawed job in an area that is interesting to you and you will often find you can work your way up to much better perches.