Getting into ETF after big stock gains

Hi, started investing one year ago and grew my stock portfolio to 50k mainly with big tech. Probably over 50% returns this year. I know it’s been a bull market for tech stocks, basically impossible to lose money. But how do I even settle for the common recommendation of an ETF yielding 10% per year, after tasting those nice high returns? Can someone talk some sense into me and tell me I’ll go broke with my entire portfolio made of Nvidia, Google and Amazon? submitted by /u/90towest [link] [comme