The black marker

I used to feel safe walking around with a notebook and a pen. For writing not for sketching. And I rarely used them outdoors, though i must admit i did occasionally. But it didn't do me any good, it didn't make me catch the ideas home and use them for any work.
But then yesterday I took my marker and a calque notebook to sketch a character for a potential client. Sketching and tracing over and over, I knew I'd never take writing tools with me. And next time it'll always be the marker and the white cards.
I went home worked more and went to bed with my cartooning book, my sketch and my marker.
And i discovered that i'm now connecting emotionally to the black marker and that it gives me great satisfaction to use.
I know most kids feel so around their coloring kits. But somehow they all grow out of it.
Will i grow out of this ?
I love this and I dun wanna stop.
I want to be a cartoonist.
Can I make a living out of that and stick to it ?!
O I hope I can find an answer to that so fast.