Essentially, Jhana meditation, the Jana yoga path, Steiner's meditation methods, Tibetan Naljorpa techniques, Buddhist mindfulness, Zen, Chan, creative imagination, self-hypnotism, etc are all approaches to spiritual development through the mind. Once people step back from the active world and enter a meditative state, there comes a question: what to do now? Practices developed in different traditions to offer a meditator a staged approach. Personally, I have always found exploring all these to be fascinating, and they all expand the meditative mind 'space'.
I don't bother with them these days, though I had a lot of fascinating experiences when I was in that phase. I recommend you explore them, but don't mix-and-match too much, else you lose the evolving energy each provides. Nonetheless, after working on any particular version, try exploring the others. eventually you will find one that resonates more.
These days I simply sit in inner silence, although I have a few personal techniques to get me deeper into it. My sense is that all these meditation techniques are acquisitional. As if, once a spiritual person forsakes material acquisition or adventure for inner focus, they can't help applying the same spirit to their inner world - seeking out the vast array of inner experiences. At some point, a force within us is desperate to step off from a physical or figurative rock, to explore, engage and enhance. That's the nature of this force within us - it wants to go somewhere. For me now, perhaps also because I'm older, I just want to neutralise that force, in whatever way it manifests (unless I have a job to do, like in you pain case), and sustain in self-aware stillness.
Nonetheless, this path of the mind is one of my major critiques of all Eastern spirituality. Sure, they have the other paths of devotion (mainly in India), work (which tends to translate into valuing and offering something to the laity), and shamanistic yogi practices. But none of these are satisfactory. Really, almost all of Eastern spirituality is mind-orientated. In itself, that is fine, but it is desperately lacking in utilising the full opportunity we have as living beings. I feel they therefore suffer in producing one-sided adepts. They all have this look of being aloof and kindly sages, whom you wouldn't employ in your business enterprises. Their 'awareness' doesn't penetrate out of the sinews of their body - no sense of encountering a physical force to be reckoned with (like you see in photos of Gurdjieff).