If you are below 30 u are still young

Either u work in current job save up enough to start smtg of your own like small business or just change career now n see how it goes

U still have time

If after 30 or 35 want do drastic change like this will be too late

Sales is good too u can consider doing sales on the side like weekends? Many do sales for mutual funds or smtg like that during weekends just to suppliment main income