Some opportunities, once missed, cannot be regained.
If you are determined, patiently wait for the next opportunity.
Take long-term investments as an example. When I was down 30%, I reminded others to buy the dip. Although it was an extremely pessimistic time, there were indeed people who acted.
This is why some die-hard fans currently hold cryptocurrencies with returns exceeding 50%.
Many financial investment-related matters often go against human nature, which I habitually call 'challenging one's self-awareness.'
If you can overcome subjective fear, there will be rewards after the storm passes.
If you can't, it will continue to torment you for a very long time.