Oooh, I know the answer to this one, let me try.
You try to know yourself all of your life, but your life will always be changing and so will you. This is a good thing, it’s called learning and personal growth.
I was lucky when I was your age. I fell into a business after failing at college, that allowed me to start at the bottom and work my way up into higher management. And that worked well for the next 34 years and helped me to raise a family. High stress, phone intensive, bulllshit corporate meetings, suck-o-rama type job.
But things change and the job evaporated. I mean the whole plant just went out of biz. I could have moved but I had married again and my wife’s job was more important (that would be the 3rd wife). So now I am in between. I cook, clean, and made blueberry jam today. I am also painting a large boat/yacht. Painting is peace. While I look for the next career.
You will probably have many different jobs in your life. Many, even unrelated, entire careers.
I was lucky to have the long term job I had, but that sort of thing is uncommon now. Adaption to change is the norm.
Try to understand what makes you happy now. Because the answers you expect will come in time will still be waiting.
That old person you see walking down the street does not have it all figured out either. I’ve got 30 years on you and I am sure that the next direction will be interesting, but not where it will lead.
It you doubt, if you worry, then hey, you are doing it right. And it will be that way as long as you live. Sorry but that is the truth. Nobody gets it figured out, nobody ever is really sure of themselves.
The journey is easier if understand this.