Dreams involving water, such as running beside a river or a "moses" (which may refer to a body of water), often symbolize emotions and the flow of life. The act of running could indicate a desire to move forward or escape from something in your waking life. Holding a log may represent burdens or responsibilities that you are carrying with you.

The presence of a third person could suggest that there are external influences or support in your life. This person could represent a part of yourself or someone you know who is helping or guiding you as you navigate emotional waters.

Consider what the log represents in your life—are there responsibilities or emotional burdens you're currently facing? Reflect on your relationship with the third person in the dream; they may be significant in your current life situation.

Overall, this dream may be encouraging you to confront your emotions and the challenges you face while also recognizing the support available to you.