Fish, I've also owned shares for a very long time (1999 was my introduction to this dream company, LOL).
I also took the wild ride to the 80's and back.
I also promised I would sell some shares if it ever got back to 30, 40, 80, etc. I did sell some on the way up, and kicked myself for selling too soon. I sold some near the recent top, and kicked myself for waiting too long to sell more.
The reason I keep holding onto my shares and gradually accumulating more is that I still believe in the fundamental story. I sat in on the orals at the CAFC and came away more excited about the near term prospects in the court system than I have been in years. I also see the revenue increasing and the respect for IDCC growing. But I guess the trend is your friend and you should not try to fight the market. So maybe next time I'll do better at mitigating my risk when the share price reaches those lofty levels or the world starts crumbling around us.
Or I could just blame this on NukeJohn, LOL.
Just kidding - we are all responsible for our own decisions and results.