Anyone else just feel blank sometimes despite being normally a very extroverted person?

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Sorry if this is an already existing thread and also sorry for the long titele but is anyone normally a very excited and extroverted person but suddenly its like you hit a block and you feel like you lose all emotion and become completely unable to talk to a person with that same excitement you normally show it also just feels like you look for any quick ways to end yourself in case something bad happens like if one conversation with a friend go's wrong you just feel like "welp i messed up time to walk in front of a car" i don't know if this makes any sense but this is really the only way i can describe it sorry