Don't use SMS for two factor authentication. SIM swapping is too easy. Use an authenticator app or a hardware security key. The inconvenience of setting it up is nothing compared to the inconvenience of losing access to your accounts.

Address reuse is a privacy leak. Every time you send from the same address, you link those transactions together. Use a wallet that generates new addresses automatically. It's the single easiest privacy upgrade you can make.

Batch your transactions. Instead of sending ten separate transactions, combine them into one with multiple outputs. You save on fees and reduce blockchain bloat. Most modern wallets support this. It takes the same amount of time.

Running a lightning node is the best way to understand Bitcoin's second layer. You don't need to route millions. A small node with a few channels teaches you more about liquidity management than any book ever could.

Taproot is underused. Most people don't realize it makes multisig transactions look like regular ones on chain. The privacy upgrade is there for free. You just need to use wallets that support it. Check your wallet today and enable Taproot addresses.

Verify the software you download. Check GPG signatures on Bitcoin Core releases. Compare checksums on wallet apps. A single compromised download can empty your wallet. The extra two minutes saves you from trusting a third party with your funds.

Don't store your seed phrase digitally. Not in a cloud drive. Not in a photo. Not in a password manager. Ink on paper stored in a fireproof envelope is still the gold standard. The analog solution beats every digital one for this specific problem.

A passphrase added to your seed phrase is a cheap upgrade with massive security gains. Even if someone finds your 24 words, without the passphrase they have nothing. It's one extra line of defense that costs nothing to implement.

Running your own node is the single best educational investment in crypto. You don't need to be a developer. You need to follow a guide once and watch what happens. The understanding you gain from seeing blocks arrive replaces years of forum reading.