According to RhymeZone, there are several words that rhyme with "myself." Here are some examples:

• One syllable: chelf, delph, elf, guelf, guelph, helf, relf, relph, self, selph, shelf, skelf
• Two syllables: overwhelm, rebelled, excelled, repelled
• Three syllables:
• Four syllables:
• Five syllables:
• Six syllables:

Note that some of these words are "near rhymes," meaning they dont perfectly rhyme with "myself" but have similar sounds.