http://whirtorrgetftvz4g466sjqkegtyi35bjl4bvotfkfossunf5my4x6ad.onion/blog/self-custody
Through this, Bitcoin educators, supporters, maximalists etc., want to emphasize that (unless trading cryptocurrency on a daily basis) everyone should withdraw their coins from any custodial service and become self-sovereign. The only thing that is needed for this is a wallet, preferably hardware wallet, where the users can safely store their coins offline.