My daydreams are intense, especially when I'm in optimal health.
They began when I was slightly younger, around secondary school age and were just innocent and simple daydreams when travelling on the bus or tube and I would daydream about people I liked from school and really, they were mostly intense love/sexual type of daydreams.
This continued throughout secondary school (they were frequent and continuous because most the things I was daydreaming about were frowned upon in the real world etc). During A-Levels, I barely had many daydreams - maybe a limited few about getting into Oxford, but nothing too amazing. But, it was this year in uni that was really different - when the daydreams and fantasies left the love/sexual themes and started to increase in vividness and intensity and most of all became epic. I was now daydreaming about myself being taller, better, stonger and more intelligent. They further evolved into me daydreaming about lots of wild and grand things - from me becoming a world-renowned genius, to me being a superior human landing on Earth, having come from another dimension, to being Prime Minister, autodidactic super-genius, super-Etonian, going through a rapid next stage of evolution, being superior to everybody else, being a lost member of an ancient human race falling to Earth with amnesia, travelling alternate dimensions, reversed history (e.g. a dominant Africa etc), super-warrior in ancient times, being an ultra-famous celebrity, being so clever and super that I'm labelled by some as a 'Saviour' or alternatively, 'The AntiChrist', being an amateur superman, having enhanced human abilities, having a long-lost recessive gene which sees me having amplified human characteristics, therefore making me mentally and physically superior, being so clever and of genius-intellect that technological advancement is made even more rapid therefore seeing mankind plunge out into space much more quickly than could have occurred without me etc etc.
I plan to have another intense daydream today, possibly something about a hegemonising inter-dimensional state taking over each alternate dimensional Earths etc.
The funny thing is, I barely daydream realistically about my own personal future in real life - it's almost as if it's not needed. I'm doing quite well in uni (averaging 1sts and 2:1s) and I'm quite confident in my plans for a future career. Rather, the daydreams are of unrealistic quality and ideas - hence why they're all the more enticing. And it doesn't help that I'm not tall (in daydreams, my mean ideal height is 6 foot 7 with the heights increasing depending on the daydream, but I'm never shorter that 6'7) - in real life, I'm around 5'7/8 and probably won't grow to my imagined ideal height.
Some suffer from delusions of grandeur, but I keep such delusions in the confines of daydreaming and my friends would never even guess that me, a sane and logical maths student gets up to in his head. I believe such crazy daydreams actually help keep my sane in real waking life.
P.S. Notice, how I say 'real waking life' as the daydreams and whatnot are so intense, that sometimes I have mild difficulty separating the boundaries between reality and fantasy.
Anyway, I hope you understand my post if you're reading, as I've just typed it quickly on the spur of the moment with manic emotions swirling around.
P.P.S It must also be said that I don't daydream in meetings or lectures or anything like that. Daydreams are normally confined to times of personal space such as when in the shower or in my bedroom lying on my bed. They don't interfere when I'm having conversations or whatever.