How can one manipulate elementary particles to make a person live forever?

Assuming that a person has the power to manipulate all elementary particles in any way (i.e. changing them from one elementary particle to another, nuclear transmutation, moving groups of them at a time to manipulate matter on the macro scale, etc), how could they use this power to alter their environment/themselves to not experience the affects of aging, diseases, and other natural things that cause death?

My Question in short: How can someone with the ability to alter reality in any way live forever?

Edit: More detail

The setting is in the future (no specific year, but in a future with great advances in technology and science) where "brain implants" can be purchased that can read minds through subvocalization and machine learning that recognizes patterns.

There is also a document (only accessible online due to the size of it) that is constantly being updated that contains most universal collective knowledge. The creators of this project want to make knowledge accessible to all without cost or trouble. Most schools now use this document to base their teachings on, but because students (and a lot of members of society in general) are not always interested in learning things and are generally lazy, the education system is still required.

posted about 5 years ago

Aloysius‭

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