I am a long term holder of altcoins. I sell my tokens (both alts and bitcoin) when I am broke, and when I need some money. I don't sell because there is a deep in the market, I sell because I need to. So, what about you?
I am selling my cryptocurrency investment not because of the need of money i sell it in order to save it from the continue fluctuation of market value that makes it very cheap today.
Most people sell coins because they need money, I suggest before buying coins that we have to have excess money, crypto investment is always hard to guess so I think the wrong thing if we sell for reasons of need of money.