By studying with older painters.
There is usually one and the same answer to those questions 'Why did XXX become an artist?' Because they felt they had the talent and the urge. It is as simple as that!
Vincent van Gogh, Rembrandt, Mondrian, Escher and so on and so on....
Rembrandt
Rembrandt was Dutch. The capital of Holland is Amsterdam.
The Netherlands.
Rembrandt
He was an artist.
Rembrandt painted it.
There is usually one and the same answer to those questions 'Why did XXX become an artist?' Because they felt they had the talent and the urge. It is as simple as that!
Jan Lievens did and Govert Flinck did. But most of all Rembrandt himself did.
About 1629.
Caravaggio