COLDCARD was a totally new idea, using Secure Elements AND being Open Source. Then there is a ton of inventions and new features, like splitting the PIN for anti phishing, adding transaction checks, air gap signing, PSBT push, BIP85 implementation, Trick PINs, paper wallet generation, Address explorer, proper multisig support and air gap multisig wallet creation, encrypted backup, number pad, clear case and proper supply chain security bags, and lots more https://coldcard.com/docs/compare-wallets

I don't think was advice, but a few realizations; mange your cash right on bear markets, don't ask permission but do make industry friends outside twitter, ship often, experiment as we are still very early.