I’ve never been very disciplined at it - when I was very young, it happened automatically, and I would fly a lot. But I lost that as I grew older.
About a decade ago, I read Robert Waggoner’s book; I learned that if you just spend an hour or two attentively reading a good book about it, it may start to happen that very night; you’ve given yourself the suggestion.
(What’s been more interesting to me as I’ve grown older is that my dreams often productively carry on my waking thoughts and concerns, now. It’s like the 8 or so hours aren’t really wasted :-)
Yep..... doesn’t happen as often as before though I have come across some things that have given me pause. I suspect that various life changing events “scramble” things in the ol brainpan. Thanks for the book tip.