I remember in 2008 at the financial crisis a friend has Morgan Stanley shares and was panicking that it was all over. I told him to hold because he didnt need to sell to put food on the table and selling was a knee jerk reaction. Of course he sold then the price doubled a week later.
The purpose of the above story is panic always costs the investors. Stay calm and treat it as just money which can come and go. Be smart and sensible and you will get a better result.

They may have been highs when you bought it, but it wont be the final high. It happened with Amazon at the 2001 crash, with banking stocks in 2008 and they all rose above that. If you can HODL on and are not desperate for the money then HODL. My view is we will see new highs before end of November this year, and further highs afterwards.