Getting your digital life organized does not take a month. It takes one weekend and a plan that tackles the parts that cause the most friction first. Here is a two-day order of work.
Saturday morning: passwords. Install a password manager if you do not have one, and move every login into it. Start with email, banking and anything that stores a card. Change any password you have reused. Turn on two-factor authentication for your main email account first, because every other account can be reset through it.
Saturday afternoon: backups. Use the 3-2-1 rule: three copies of anything important, on two different kinds of storage, with one copy off site. In practice that is your computer, an external drive and a cloud backup service. Set both backups to run automatically. A backup you have to remember is one you will skip.
Saturday evening: files. Create a handful of top-level folders, such as Documents, Projects, Finance, Photos and Archive, and move everything into them. Do not sort every file perfectly. Anything older than a year that you are unsure about goes into Archive. Empty your Downloads folder and your desktop.
Sunday morning: email. Unsubscribe from newsletters you never open. Most mail apps show an unsubscribe link at the top of bulk messages. Then archive everything older than a month in one move. Search still finds it, and your inbox becomes a list of things that actually need you.
Sunday afternoon: phone and subscriptions. Delete apps you have not opened in three months and move the rest off your home screen unless you use them daily. Then go through your card statements and your phone's subscription list, and cancel anything you forgot you were paying for. This part often pays for the password manager on its own.
Sunday evening: photos. Turn on automatic upload to one photo service, and pick one. Photos spread across three services are harder to find than photos in none.
The short version: passwords and two-factor first, automatic backups second, then a simple folder layout, an archived inbox and a cleaned phone. The goal is not a perfect system. It is a setup that keeps itself tidy, so you never need another weekend like this one.