Why dont mine and hold, you dont have to sell at the time you mine, i mined a lot at price at 0.07 btc, and sell eveything on last pump at 0.13, so just stop crying and wait
Some of us have bills to pay and no other income source to pay them out of.
In my case, I don't see any reason that ZEC price will ever rise (other than short-term pump-and-dump) as well.
IMO "mine and hold" is almost definitely a losing game on any altcoin.