I don't read what you wrote...

your title says it all....

...lets replace hyper with happy and depressed with sad...

exactly as you described...

you may experience extremes of these 2...

...if this re-occurs on a regular basis...

the diazepam might only delay this mentally chosen but emotionally painfull experience...

it's likely you DO need some antipsychotics...

...and there is nothing wrong with that