I used to spend hours and days daydreaming, mostly in the evenings on going to bed, also on long, ( or even short ones so long as totally routine/daily ), bus and train journeys, weekend mornings, and at certain periods for whole days at a time, sometimes two or three days in a row.
A really long stint would leave me feeling strangely but wonderfully refreshed, rejuvenated, happier, ( for a while ), but that may be simply because to do it I had to be alone, in my room, and the positive effects may simply have been the result of concentrated "downtime". But even then it wasn't the same as sitting drawing or reading; it was as if I had drunk from a spring of energy.
I haven't been doing it so much for quite a while now. I still daydream evenings sometimes before falling asleep, ( which occasionally then actually keeps me awake! ), but the trouble is I don't know what has brought about this change. I can only speculate; I think that it may be because I have accepted a lot more things, am more at peace with the world/life/myself than I used to be.
I think it may have been something I did a lot of when I felt insecure, whereas for several years now I have felt fairly safe. And of course daydreams are the ultimate safe space, where absolutely everything is under your control.
I particularly identified with merrymadscientist's description of daydreaming, by the way, and think that another reason why I daydream so relatively little now is that I have "exposed"/deconstructed many of the dynamics which used to fuel the "stories", so that they no longer seem so credible/gripping or attractive.
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