Speaking of bitcoin, bitcoin has helped my life, especially in my family's current economy, which I can tell very well from before, and I regret a bit because I know a few new bitcoins a few years, if only I knew bitcoin from scratch maybe now I already a millionaire 
Me too. I have regrets in my bitcoin holdings, i have coins that has high value so I sell it as soon as i have it. But after a few weeks the value rise up and my token is already gone