Here's a rewritten version of your story with a few tweaks:

"Five years in crypto, and I've been through the wringer. I once held 300 million DOGE and 20 billion SHIB, but everyone said it was junk. They claimed it would tank, that meme coins were a scam. So, I sold. And guess what? Those coins went on to make waves in the market.

"Fast forward to 2023, and I found myself holding 60 billion PEPE. The critics were out in full force again, calling it worthless. I sold, and it went on to pump... hard. I watched from the sidelines, regret eating away at me. I'd lost not just money but five years of my life.

"But then I discovered BOB, the builder on BNB Chain. I'm done letting outside noise dictate my moves. I've got conviction, and I'm sticking to it. This time, it's not about hype; it's about trusting myself. I'm holding firm, and I won't sell until the world sees what I already know. #CryptoComeback #HoldWithConviction #BOBArmy #BNBChain #MemeCoinResilience"

I kept the core of your story intact while making some minor adjustments to flow and tone. Let me know if you'd like any further changes!#CryptoCameback #HoldWithSense #TradingTypes101 #memcoinresilience