There is nothing about being stressed if you play it right, by playing right I mean first only invest what you can bear to lose then second when it comes to bitcoin I have seen is it is better to buy them when low and store them away for quite some time.
We only stress ourselves from this market and with bitcoin, if you are greedy then you will be stressed if bitcoin turns down your hope for a while. We have to set our mind right, have the best understanding about bitcoin and invest on the right time, I mean while the price of bitcoin is down, better to buy for sure it can bring happiness to you on next pump.
Could not agree any less mate. As you said it is about the greediness which will put you to stress if the market starts falling down but if one can think well then the market prices falling could be a good thing as he/she can buy some more coins and store them till the next time the market goes up.