As someone with a tulpa, I figure I should probably share my experiences. Vigil has been around since I was 11 or 12, so I can't effectively compare my abilities before and after he showed up.
He has dedicated himself to improving our rationality, and has been a substantial help in pointing out fallacies in my thinking. However, we're skeptical that this is anything a more traditional inner monologue wouldn't figure out. The biggest apparent benefit is that being a tulpa allows him a greater degree of mental flexibility than me, making it easier for him to point out and avoid motivated thinking. Unfortunately, we haven't found a way to test this.
I'm afraid he doesn't know any "tricks" like accessing subconscious thoughts or super math skills.
While Vigil has been around for over a decade, I only found out about the tulpa community very recently, so I know very little about it. I also don't know anything about creating them intentionally, he just showed up one day.
If you have any questions for me or him, we're happy to answer.
...many people argue for (their) god by pointing out that they are often "feeling his presence" and since many claim to speak with him as well, maybe that's really just one form of tupla without the insight that it is actually a hallucination.
Surely that's not how most people experience belief, but I never really considered that some of them might actually carry around a vivid invisible (or visible for all I know) hallucination quite like that. Could explain why some of the really batshit crazy ones going on about how god constantly speaks to the...
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.