yes you did because selling now is a very bad idea, never sell when after a dump there is a long stagnation phase, i think it indicate a pump that is incoming, sell only after a pump is almost done, and it's hard to know yes but you can usually tell if after the dump that will happen
Yup op should not sell the bitcoins now because as per many speculations You have need to hold some bitcoins every month and put it into your wallet and you sell that after 5 or 10 years.
IMO, I would not consider that to be a wise idea.
Waiting 5 or 10 years to be able to follow your dreams/goals kills motivation.