Need some advice as I transition to a new job.

M(20) I recently put in my two weeks at a retail store that I have worked at since high school to go work for a family member who owns their own business. I am going to be losing around $100 a week starting out but on the other hand it is a better work environment and I will be getting experience to help me start up my own business which is a goal of mine. Currently being a young adult I still live at home and have minimal expenses, in my mind I want to think that your early 20’s are the time to take risks and try things. On one hand I can make more money for the time being at a dead end job or I could lose some money for a while and get first hand experience at something that would help me in the future. What are some of your guys’ thoughts and advice? TIA!