Wow, I'm currently in the same boat and relate to all that you've said. Monitoring this thread.
That said, currently I'm looking into DIY soylent, though I have a pretty decent diet anyway and nootropics. Nootropics seem to have potential but I've yet to gain first hand experience.
I'm also looking for a way to make mindfulness meditation a habit as I cannot bring myself to do it daily either, it does help though.