I tell you sir, its usually not as simple as it sounds, the mental stress that comes with the temptation to sell off amid fluctuations especially can be crazy atimes, that's where sometimes informations and analysis play vital roles
it's only hard if you keep looking at the price 24/7 even the most adept investor will hardly not shaken.
but most of people I know who hold BTC and are holding it for long term would just stash their privkey or if they holding it in exchange which of course a risk, would just delete the app so they wouldn't get fixated on it.
basically invest and forget, investing will only become hard if the money you used is the money you needed to pay the bills and so on.