Here; here @wa_Ithaka. Exit is more difficult than entry....isn't that what they about Mombasa?
For me, a lot depends on what I want to do with the cash. If I'm on a buying run, I begin exiting at 10%. But hardly do I get out kabisa. In the last 10yrs, I've dumped only one share for good!
Usually, just sell enough to recover the profit gained and/or to purchase the desired new entry.
Nothing is real unless it can be named; nothing has value unless it can be sold; money is worthless unless you spend it.