I must say that it is a reality: "If they are not your keys they are not your cryptos" and that principle should never be repeated as a mantra and said every night together with prayers. And why, precisely the only person you should trust is yourself above all else. Beyond the method used to safeguard your cryptos you must be aware that you are the main responsible for what you safeguard and the way you use it is the key in this matter beyond if you forget, damage or misplace any cold wallet, app, hard drive or paper.