I do beat up on myself regularly. But every now and then I do something right. In my MFI formula approach, I did give myself the "out" of discarding one stock every quarter from consideration.
That stock has always been PDSI as everything I read suggested their royalty steam was coming to a close. Looks like the stock market is agreeing. PDSI is down 33% from start of year and 28%/23% down since I started March and June MFI tranches. Not that those tranches are big winners, but PDSI in any of my four tranches would have been a drag.