One should usually admit such things publicly, but I want to make a point relative to my theory, so here it is:
When you're reaching out for a goal too large for an ordinary human to accomplish, having thoughts of grandeur actually helps you keep on target! I often catch myself thinking about the "after". What will happen after I complete my theory; how I'll try to get it published, the methods of explaining it to the mass, how I can also make a profit out of such extraordinary knowledge, etc. Another human might quickly try to dismiss such thoughts or even try to discipline himself into avoiding them, as they lack humility and modesty and character. But when you're reaching for the stars... you actually need such thoughts, they are invaluable into keeping your Driving Pockets active for a long time.
Remember what we've already said: thinking is living (on a smaller scale/level, i.e. it is not as intense as actually experiencing them in flesh and blood, but the mechanism is the same, just turned down some notches). So when you think about some probable future stimuli that have the potential to give you pleasure, the DPs will be activated (but not as much). Nevertheless, this activation is a promise for pleasure.
Let's take a step back and explain the "repressed" feelings (I really DON'T like this translation. The greek "Απωθημένο" is much better) and how they get created.
What have we said about feedback? You get feedback (=strengthening of all currently active neural connections) in two cases: when the DPs get activated (feedback in the pattern-matching mesh), or when they get deactivated (feedback in the action mesh). So when you get a good scare about something, you will strengthen the path between this pattern and the DF of pain (fear is the promise of pain). The next time you see this pattern, the paths are stronger so the signal loss traversing it will be less and the DP will be even bigger!
On the other hand, when you eat something you really like, the active neural paths in the inner loop will be linked to this pattern (feedback in the action/inner-loop mesh) and the next time you try to eat it, you will "expect" it, so it will be more in-context and the DIFF mechanism (we haven't discussed about that yet, have we?) will subtract the predicted signal from the real signal and less of the original signal will enter the inner paths of your brain, and thus you will get less pleasure!
So you repress your feelings by having a promise for pleasure (activation of DP; pattern-mesh feedback) that does not have the chance to get fulfilled (i.e. to act on this DP and deactivate it, so you get action-mesh-feedback). In this way, sooner or later you see a person that exhibits excessive and rampant behavior (BIG DPs) when he sees something not that extreme. It is because he was getting a promise for pleasure (or pain!) that did not have the chance to get acted upon and become in-context. Time after time, the DP was getting larger and larger until it blows up :)
Let's get back to megalomania... Megalomania acts very much like repression in the aforementioned example. You get a boost in your DP that does not get fulfilled. The effect of this is that, although in many other people this DP would diminish too much too quickly ("this is a long-shot, I'll never have the opportunity to accomplish it") and they would move into acting on other DPs, in a megalomaniac this boost in the DP is enough to keep the promise alive! The fact that you "live" the potential (the what-can-be) in your thoughts is enough to keep you going, where others would have stopped ("Keep walking" :D).
