DRAMATIC Onset of Symptoms

For symptoms to be as dramatic and as sudden as you describe - literally overnight, i would not say it was something that you were doing regularly in your life before that event that did it - whether that be marijuana, eating grains, sleeping for only 4 hours - the kind of dramatic effect you describe sounds like a sudden shift in your body chemistry, akin to poisoning or something.

Try to really think back to just before that night - did you take a health supplement? Did a meal you had contain a hard crunchy thing that could perhaps have dislodged an Amalgam filling and you ended up swallowing it (that happened to me eating a seedburger years ago).
Or as JG said, perhaps cilantro or ALA could have caused a mercury movement within your system and sometimes the effects from that for some people can be sudden symptoms.

Despite maybe your lifestyle not being the healthiest, i cannot feasibly see how your recreational habits or slightly lax diet would suddenly contribute to overnight psychosis.

People who experience psychosis attributed to marijuana feel symptoms slowly - gradually worsening over time.
The strains of marijuana of this modern era are extremely different in their chemical nature than the heirloom strains of the indigenous plant.
Ratios of THC to CBD have altered dramatically - specifically THC being bred up to levels of between 25%-30% in what is commonly known as 'skunk'.
Originally THC levels were around 3% - and before hybridisation of marijuana became commonplace, psychosis from marijuana was extremely rare, if non-existant.

The trouble with modern strains is that the THC has been bred UP, but the CBD levels have not been altered - CBD 'relaxes' the mega hit that THC exhibits on the brain - it's the foremost anti-inflammatory of the cannabinoids currently known.
CBD balances the THC effect - THC on it's OWN causes extreme depression, lethargy, anxiety, paranoia and can even cause intense suicidal thoughts in some.
CBD negates those feelings, mother nature is extremely clever - CBD coupled with THC creates the pleasant experience that has hooked many folk to the herb.
Nature did not intend for us to have 30% THC and only 3% CBD.

Indigenous strains had low THC and CBD - around 3% - and so that's why folk back then could smoke all day long while getting on with their work and life...instead of being 'couch-locked' with a mega THC-driven stonedness from street skunk that have been bred so far away from the original plant it's actually a crime, in my view, to call it cannabis.

So if you partake in the herb - try to get a high CBD strain - the research on this cannabinoid is really intriguing and is worth having as a medical aid - not smoked, vaporised, juiced or eaten raw.
I wouldn't recommend street weed to anyone - most of it is tainted with stuff you don't even want to know about.
Find a reputable, organic cultivator.

So, if it was marijuana that provoked this sudden psychosis, the ONLY way would be that you got a new supply, from a new supplier, that potentially could have been foliar-sprayed with non-organic chemicals, and you've had a bad reaction to it and it's stuck in your system, and/or they used non-organic fertilisers to grow the plants. Consuming such plants, especially if the nutrients haven't been used up/flushed out in the plant before the flowers are harvested can mean the product contains a lot of inorganic chemicals which anyone with phase 2 liver detox issues will surely have symptoms from.

If the psychosis was from the high THC stuff you've maybe been smoking, symptoms come on slowly, in the majority of people. Always exceptions to the rule, of course, as some people experience psychosis from one LSD trip and never 'return' to who they were before the trip - so anything is possible.

Think back - did you have a different batch of weed? Did you use it the night before you woke up with sudden psychosis? Was the high different to normal?

There is some extremely dodgy supplies of all things in this world, and recreational drugs are the worst for quality and purity. Nutritional supplements running a close second IMO.

Liver cleansing, using useful herbs, tinctures and food to support Liver Cleansing may help you. If it does then it can add credence to the theory that maybe a 'poison' of some sort affected you - whether it was from weed or something else.

The sweaty hands and feet are interesting symptoms - any underarm sweat or head sweat or just palms and feet?
Sympathetic nervous system imbalances always seem to cause excessive sweating in certain areas. The SNS can get disrupted by all sorts of things so it's not easy to know the cause.

Really does sound like your system had a shock from something - and it's affected the Blood Brain barrier affecting your mentality.
A person does not go psychotic overnight.
I empathise, these kinds of symptoms can be worrying but don't worry, begin your healing path :-)
You've come to the right place to learn about detoxing and cleansing - that's where i would start.

If you have a helpful MD perhaps ask for a blood count/liver function test...see if anything comes up.