I eventually settled on two 'states'. A 'centered' state and a 'joyful' one. Any time I noticed myself outside of one of the two states, I performed the quick ritual to bring myself back to it.
After a few days of practice, I found myself shockingly good at performing quick, directed mood shifts, in any situation I found myself in. I settled into a routine that lasted a few weeks.
It didn't suck, I never 'overdosed'. It was every bit as cool as you can imagine it being.
However over time I lost the desire to keep it up. Eventually I realized that, in the end, being able to relate to others requires a certain amount of empathy, and being blissed-out all the time made it really difficult to do that.
It might get easier if everyone around me also could stay centered or joyful, but if I want deep fulfilling relationships with others, being able to feel what they feel and not what I want to feel is important.
This is ultimately what makes addiction so caustic to relationships IMO. Your mood stops moving and flexing with your social environs. It's a feedback loop that closes you off from those that sustain you and you lean heavier on the substance.