The phrase "my own sweet self me" has a very specific meaning that can be difficult to translate into synonyms. However, some possible options might include "the truest essence of my being," "my authentic self," "the most authentic version of me," or "the purest expression of my identity." Alternatively, one could use more general synonyms for "self," such as "person," "individual," or "character," combined with other adjectives or descriptors that capture the specific qualities of the speaker's identity. Ultimately, the best approach will depend on the context and tone of the conversation or writing in which the phrase is being used.