Complex sentence: For most of his life Jim was just an ordinary earthworm engaging in normal worm activities, such as eating dirt, crawling and fleeing from hungry birds, until one day wherein fate should happen to smile on him and his life was changed forever.
Split into simpler sentences: For most of his life Jim was just an ordinary earthworm engaging in normal worm activities, such as eating dirt, crawling and fleeing from hungry birds. Until one day fate should happen to smile on him and his life was changed forever.