Existence - the real Heaven and Hell?

I'm feeling a bit philosophical today, as I often am and I got reading some articles about the Matrix and some of the philosophy and metaphorical elements to it.
Now say what you like about the Matrix trilogy, but when the first film came out it was a sensation - no question. The effects, the choreography of the fight scenes, the plot... it all added up to a blockbuster. Thing is, if you are a half way intelligent person, it really made you think. If you were a halfway intelligent person with a curious personality or an interest in philosophy, it not only made you think, it made you puzzle over it for some time. What a way to bring philosophy to the masses!

I believe that subjective experience is all we have and that all of the subjective experiences and the associated emotional and rational responses we had to those experiences form our personalities to the greater extent. The word for this is Weltanschaaung, a German word that basically means the 'world view', or the summation of your life's experiences. This is distinctly different, but at the same time, intertwined with memory. Your Weltanschaaung is obviously held in your memory, but it's not just 'memories' in the traditional sense. It is your memories of everything that has happened to you and your responses to those incidents. It is the starting point for any new experience - your brain first refers to your Weltanschaaung to see if you have encountered something like this before and if so, how you responded as a point of reference.

It has been said that the only constant is change. People tend to think of themselves as unchanging - that I am me, no matter what happens to me. If I were to lose an arm, I would still be me. Obviously this has to do with the seperation of body and mind, but there is an argument to be made that the two are intrinsically linked - if the body dies, so does the mind and vice versa.
However, people do change, both physically and in their personalities. Tastes change in food, clothes, friends etc. Every ten years you effectively grow a new skeletal system, due to cell replacement. Every month your topmost layer of skin in completely replaced. You form new opinions based on new information. You may have a discussion with someone and come to ally yourself with a point of view they have, in which case do you assimilate a part of their personality? If this is the case, and we are creatures of flux, how can we define ourselves as constant, individual personalities?

The power of the mind is awesome, in the literal sense of the word and can affect a person's day to day experience of the world. People with cognitive disfunctions will experience the world in a much different way from someone without those disfunctions.
There is a culture, (and I'm sorry but I cannot remember which,) that believes that Heaven and Hell are real, but exist only in the minds of everyone. They believe that you pass through Heaven and Hell several times per day and that these concepts of Heaven and Hell are not places, but states of being - joy and misery. Everyone has the power to decide to be happy or unhappy - to let things get to you or to let things go, but it's not always easy to do so.
Strangely, I've never really done much thinking on the concept of Heaven, but I have thought a lot about Hell - again in more abstract terms than thinking of it as an actual place to be transported to after death.
My thinking is along the same lines as above - that it is a state of being that can be influenced by outside events but ultimately exists only in the mind of the individual.
However, I did think about what I would do if I were given the task of creating a human Hell. For me, Hell would not be about fire and brimstone or sulpherous boiling lakes. It would not contain demons engaging in painful tortures.
My Hell would be about frustration. To me, frustration is a far more insidious feeling than pain. Pain can be ignored or treated and is always transient at best. Pain will break people, but frustration is what sends them mad.
My Hell would be a place whereby the average person would be set upon by desirable enticements, (which could be a range of things, from money and possesions, to small amounts of power, to love...) designed to foster longing, only to be thwarted by other societal issues. My Hell would be a place where there was a great disparity between those in power and those without, but that those in power would knowingly foster hope in those without, whilst being safe and comfortable in the knowledge that 99% of people would never achieve what they hope for. This would be achieved by allowing people certain, small rewards which are completely negligable, token gestures to those in power, but which to those without represent the possibility of becoming one of the elite and therefore fosters hope.
Hope is the key to my Hell because without it, people would give up. If there is truly no hope left in a situation then people have no choice but to give up, but if even the tiniest glimmer of hope exists, they will work and fight and die in order to achieve the unachievable.

So, in short, my Hell would be somewhere where you work for things that are either ultimately trivial, or at best, transient whilst being constantly frustrated by your lack of any real power to change things, but being spurred on by the hope that one day you will be able to. Sound like anywhere you know?

Taking all that into consideration, I can honestly say that the last month of my life has been Hell.