Buy or develop your own time machine and go back to 2008 and mine BTC on the computer at your mothers house in the basement
go back to yesterday and buy a jackpot lottery ticket. You will win 10000000$ and get rich in a day. LOL that sounds hillarious
Let us be realistic here, we cannot go back to the past because if we can we might be all rich now.
Just face you current situation now and make sure you will have to work hard and grab every opportunity you can see because that would lead you to become rich, just always have patience because there are no shortcut to become rich.