It's very simple. In a bull market hold your coins. In a bear market sell them for usdt.

Those that hodl their coins in 1st half of 2018 got rekt. Those that didn't hodl their coins in 2017 got rekt.

As for me I don't care as much. My rigs are paid off by holding most of my coins i bought in early 2017 and I use my normal day job to pay electric every month. I'm probably in the negative due to this but I'll wait till next bull run in 2 to 3 years before I sell.