Finish Line = 30k a month cashflow

So, Ive gone through a few forums and I saw a plan to make 30k a month in cash flow, they said you would need to invest about 3.5 million and inorder to get the 3.5 million you would need to make 50K a month for the next 5 years. I'm 25 now, Im trying to make the right decisions to enjoy life in my 30s. In my 20s working pay check to pay check. More concerned about retiring my mother and providing a life for a family I'd like to have in my 30s. I was thinking about renting office spaces but on a smaller scale. A coffee shop vibe with the utility of an office. Thoughts?