Is it time to let go of my 9-5

So I work a government job make 75K a year and do eBay on the side reselling used items some Amazon FBA and clear roughly 50K a year from reselling only work reselling on the weekend because the rest of the days I work my 9-5. Do you think it’s risky if I quit my job or do you think the 50k I clear will double or maybe triple?

Thank you.