When you manage your own Monero Account with the private @spend-key, you are solely responsible for the security of your funds. Thankfully, Monero makes it very easy to backup your account. When creating a Monero account for the first time you will be given a unique @mnemonic-seed for your account that consists of 13 or 25 words in the language of your choosing. **This seed is the only thing you need to backup for your account**, and so it is imperative that it is written down and stored securely.Never store this seed in a form or location that would allow someone else to see it!