There are several key words such as 'stress' or 'overwhelming' or wanting to quit but being unable to, but what is often common to persons suffering of delusions of a manic extent (btw, I think they seized some cocaine from him as well if I remember correctly) is believing they are on a special mission to accomplish something world-changing and even expressing intent to sacrifice their lives if it were needed, zealousness, being over-invested emotionally in the 'idea' and perhaps most importantly, the unlikeness of their belief or idea actually manifesting as envisioned.
His message is very self-centered and does not mention other people (joining him or helping him reach his goal). It is not unreasonable to think/realize that his belief is/was failing to fit with his socio-cultural background, especially considering he was mostly running the op alone.
There were mentions of admins that were paid lowly sums compared to what he was making, I assume they had very limited attributions and he was the only one in true controlling capacity.
Throw in the necessity for secretiveness due to the nature of the op, the ensuing distrust and suspicion and it is a safe recipe for psychosis as a result of stress.