Look back in history to any great company; they were hammered right and left that they would never succeed and people could give millions of reasons why they would fail. Remember who is driving this bus... Elon Musk is someone that does not fail. Look where this stock has come since it's open back in December 2012. I have traded in this stock since the first day it came public. If you stop jumping in and out, it will help to build a base for some appreciation in the stock price. Just be patient, good things are coming.
Trying to convince people not to trade based on their own conviction and plan is not appropriate or helpful. First, explain to longs how they can sell covered calls for supplemental protection in such down markets. "Hold but protect" is essential. Someone with shares at $70 a few weeks back could have sold Jan 2015 $80 covered calls and captured a lot of premium, perhaps $20 worth. They would have not "lost" the $17 of pps but could have had the extra income from the option sale as an offset. People just buying shares and not selling covered calls at market highs are missing out on valuable income.