I thinks it is possible but not in one night or in just one click. But there is instances that in 2019 or 2020 is the best year. I just need to look for what coin is the best to invest or where to invest.. investing is really the key.
Yess... nothing impossible, right? It depends on our persistence (because this industry needs your patience, as you say "it's not in one night or in just one click") and our luck also (yeah that's true, hoping a very great luck for all of us). So according to me, it's possible to be a millionaire. Keep focus and good luck for us.