To restrict oneself to means to limit oneself to a particular action or behavior. Synonyms for this phrase include confine oneself to, limit oneself to, bind oneself to, adhere to, stick to, and stick with. These words all imply a sense of discipline and control over one's actions and decisions. By using these synonyms, one can convey the idea of focus and dedication to a particular goal or task. It may also suggest a sense of sacrifice or self-denial in order to achieve a desired outcome. Ultimately, using synonyms for this phrase can enhance one's writing by adding variety and depth to their vocabulary.