whats going on with ethereum

hi people i think around 3 months ago i had 89 etherum i kept it for a while and sold it after now i am looking the price ethereum is 347 dollars it is really unbelivable if i kept it by now i could of cashed out around 31000 dollars this makes me really really sad i think the best thing in this crypto world is when you buy something it has to be long term.