The phrase "(oneself to)" is commonly used to refer to an action or behavior that one does to or for oneself. Synonyms for this phrase include "for oneself," "alone," "by oneself," "solo," "independently," and "self-sufficiently." Each of these phrases conveys the idea of an individual taking care of themselves without the assistance or influence of others. They can be used interchangeably with "(oneself to)" to add variety and nuance to your writing. Whether you're describing how someone achieves personal growth or how they manage their daily routine, using synonyms can help you convey your message more effectively.