This could be a dream come true

So I was running the numbers and I know that past performance doesn't predict future performance but when I look at the annual growth for the last 5 years and decrease it, I could potentially be a millionaire in the next 5 years. As someone who's employed and living with parents I have more money to save so every month I put 30% into bitcoin. If I were to take even half of what bitcoin grew percentage wise and do the calculations, I could retire in 5 years. My end game is not 5 years because I'm only 27 and planning to work until I'm 40 if bitcoin works out.

Have people actually managed to do this?

Is this really possible?