Yes there is a mindset - what you have just described is exactly what you'd get out of meditation
What happened to you when you took LSA was that you were aware of how things really were. How often do you usually pay attention to touch, other than when something is an overtly obvious sensation? Or taste? Or any other of your senses? Barely ever.
I suggest using meditation to rid your brain of mental chatter and
focus clearly on every sensation/sound/sight etc which is going on around you. Pay attention to the crystal clarity of vision and the passage of the wind, the bee's/the beauty of a landscape, the way that everything is connected.
I think that's the nature of contentment and basically what you experienced on LSA. Obviously you won't get the visions or the exact same perception of the world you experienced on LSA, but it's basically the same thing.
Just go somewhere beautiful, clear your mind & see
This will not take 30 years... it could be achieved in less than a minute, and revisited at any time. It will become more powerful over time. It's entirely up to you how often it happens & how powerful it becomes.
I love this from the foreword of Albert Hoffman - LSD, My Problem Child. Sums up a meditative experience quite perfectly.