(A2A) I tried this once, and was pleasantly surprised by how successful it was! The basic technique is the same as how you do anything in a lucid dream: by carefully using self-suggestion before going to sleep one can influence the content of one’s dream. In this case I gave myself the suggestion: “I am able to travel through time whilst dreaming.”
So I fell asleep, started dreaming and became Lucid. I then willed myself to travel forward in time, imagining that I was physically going to a place where I knew I would be meeting someone in real life the next day. Once I got there I noticed what they were doing, how they were behaving, etc. Eventually I woke up.
So I then went to this actual meeting. The other person was completely unaware that anything supernatural has occurred or was occurring. But they did behave in the way I had observed them behaving in my lucid dream.
So one may argue that I didn’t physically travel through time and space whilst lucid dreaming. However, I do believe that the very act of at least attempting to do so gave me some knowledge of the future.
How can you time travel in a lucid dream? by Alex Sumner