In my almost four years of getting involved (just an ordinary holder and part-time trader, nothing so great actually), I am so sure that Bitcoin can be a major source of stress especially if you bought them at a higher price and then the price made some slide. Now, I am not saying that it is Bitcoin's fault because stress in the first place depends a lot on our perception and how we are managing it. But definitely, we can categorize as a stressor at some degree.
On the other hand, Bitcoin can also be the source of "happiness" especially when the coin is having a great time jumping upwards. Certainly, there can be euphoria if in 2020 Bitcoin can go higher that its 2017 ATH. Bitcoin is known for extreme volatility and it can go from one side to the other in matter of hours and days.
No wonder that Steve Wozniak the Apple co-founder
sold his bitcoin because riding the roller coaster stressed him out.How do you manage any possible stress coming from Bitcoin's volatility?
I think that traders stress a lot more than hodlers. Hodlers don't expect quick returns. They invest some money into BTC, put it in a wallet, and don't think about it at all for years. Whatever is happening now or in the short term is of no concern to them, they know that BTC will skyrocket eventually, and until that happens they don't care. It's a good way to eliminate stress imo, just store it and don't think about it.