The little choices we make when building a product—regardless of how much thought we put into them at the time—can have long lasting consequences. I'll cover lessons learned while building MyEtherWallet & MyCrypto, why we ultimately decided to remove private keys from the MyCrypto.com website, and how others can be more mindful as they build products in this ecosystem that promote a secure and decentralized mindset for both product creators, their teams, and ultimately their end users.