If I were to start over and do any one thing. Photography.
From the age of 5 when my Gran showed me her camera and explained this magical device can actually take what you see with your eyes and instead of it simply being another fading memory, it will burn onto a negative film over the sensor inside the camera and then you can print with ink onto a bit of paper and there will be the once in a lifetime image you captured.
My mouth wide open with amazement i was sold. I couldnt and still even since i have taken many hundreds of thousands of photos in my life believe this is available to do.
I have had the blessing of being able to travel all over the world with my camera in my hand.
People have a do pay me to take photos which is only a bonus.