"I’ll never forget when I first saw the numbers in my crypto wallet really start to climb. On the day I realised I’d made my first million, just a few months after quitting my job, I just felt panic. I didn’t know what to do - as in, whether to take the money and run, or invest it again. I decided to hold on to most of it, but it was like Monopoly money; it didn’t feel real. I’d seen how volatile the market could be, so I didn’t go out on a massive spending spree or tell many friends.