Happened to me too, got some SanDisk for about 7 during the great recession, sold for about double that, went up to 100+, then was aquired for 76 in 2016.
I plan to keep my investment properties when they are overvalued, and to wait for the next true bubble.
I also am hanging on to my iRobot, which is the only stock I currently own that has doubled. Screw fundimentals, they are a pure play that makes ROBOTS at a PROFIT. No other public company can say that. Google cut its robot division back after losing a lot of money.
On top of vacuums, they have some great DoD contracts, and robots are part of the future of war, just watch any scifi future movie.