The speaker says he studied Thai painting over an extended period, repeating lessons when he did not yet understand or master them, and connects this experience to his plan to leave medicine sales and sell artwork. This article summarizes his account of learning the skill and does not verify unrelated criminal-history or income details.
A story of repeated practice
The account describes recognizing that he did not understand the material at first, then returning to practice until he understood and developed his skill. Repeating lessons does not guarantee income from art; creative work also depends on the market, customers, costs and personal planning.
This is an interview and personal story, not a guide to quitting a job or financial advice.