If your email, documents, photographs, contacts and backups all sit with one provider, moving away can look impossible. Usually it is not impossible. It is just a job that needs to be broken into pieces.
Start with an inventory. Which accounts hold your original files? Which devices automatically upload photographs? Where are your contacts and calendars stored? Which subscriptions are essential to your work, and which are habits you have never revisited?
Next, make copies in formats that other software can read. Download documents rather than relying entirely on online links. Export contacts and calendars. Keep at least one tested backup independent of the provider you are leaving. Check that your exports are complete before deleting anything.
A custom email domain is useful because it separates your professional address from the company hosting the mailbox. Changing providers can then be easier, although migration still needs planning. For documents and file storage, open-source and self-hosted options exist, but they come with maintenance and backup responsibilities.
There is no requirement to move everything at once. Some people keep a cloud office suite for collaboration while storing sensitive archives locally. Others replace one service at a time as they become comfortable with alternatives.
The objective is to control where your data is stored with a technology company. It is the ability to change suppliers without losing access to your own work. Planetary.Blue shares practical migration approaches and can help members assess which parts of their digital setup are worth changing first.