You go back in time to when you're living paycheck to paycheck and zero financial literacy. You convince yourself to invest $100/month in Amazon no matter what, because it will be worth it. You eat nothing but instant ramen, forego preventative care, get sick from malnutrition. Your quality of life is horrible because you forego basic necessities to invest in Amazon. The dot com bubble wipes out 90% of Amazon's value but you continue to invest because your past self told you about this, but if you just endure, Amazon will recover and you will be a millionaire.
In this timeline, Amazon never recovers and goes bankrupt. On Twitter, you read a post about George Shaheen's wedding, and how he's entitled to his billions, despite predatory and exploitative practices, because his wealth could have been yours. If you had only invested $100/month since 1996 into WebVan, you'd be a millionaire.
Investing is, at the end of the day, a gamble.