Good luck with building a time machine. I believe that if you work hard enough it will pay off. Doesn't matter what you do, as long as money keeps coming in and you keep putting money aside, it will pile up eventually
Really for a time machine? Impossible thing , instead the funds for building up a time machine. Invest it to something profitable and trusted. Or if
you don't want to risk it with investment. Better store most of your bitcoins to your wallet.
And wait for the halving for sure you will get rich if you are holding 100 btc +.