you want to form are a good place to start. If you want to be good at sales, try buying stuff and selling for more than you bought it daily.
For writing, write a blog daily.
For videos, create a video every week.
For food, cook your own meals every day.
For fitness, go to the gym daily.
For painting, paint everyday.
Life is about the habits. Start by forming them early. Not necessarily from childhood, but from the time you acknowledge what it is you want to do.