If you want to hack your brain try Neuro-Linguistic Programming, it describes the OS of the mind. A good book to get started is, "Get the Life You Want: The Secrets to Quick and Lasting Life Change with Neuro-Linguistic Programming" by Richard Bandler.
The only NLP book I ever found had an impact on my life was "Sleight of Mouth" and it had a massive impact.
I learned the raw power of metaphor/analogy from that. Hands down that proved to be the single biggest tool. There are like 12 patterns of speech if I recall correctly in that book and about 4 of them are just insanely useful tactics when you need them.
I think selectively chunking up/down was another quite effective one to steer conversations.
Eliciting someone's heirarchy of values is also a super interesting and very revealing technique. You can use that to get at what the actual objection to something is. It's fairly easy to do too.
The 4th one I found applicable in daily life escapes me. But that whole book is very practical.
