Bitcoin trading is not safe but there is an increased chance of losing money due to its volatility. But if a small amount of Bitcoin can be held regularly then it can definitely be a great asset. However, it can be difficult for those who are looking for a way to collect bitcoins for passive income from bitcoins because there are no areas where there is any way to earn passive income through bitcoins.
Trading is risky for everyone As the market involves volatility, So it is never possible to earn continuously by trading. Those who learn about investing or holding instead of trading will never be interested in trading. For those who trade, I would recommend reviewing Bitcoin's price history to see how much the price has gone up now compared to the past.
So those who invested or held Bitcoin in the past are successful in the present, just as those who invest or hold Bitcoin in the present will be successful in the future.You may be right about those who held bitcoin and became successful In the past but not all. surely some where not successful because the sold their HODLings to early along the line when bitcoin price was not reasonable as it is today, because of not being patient of hold for more longer time frame.
So surely most people who buy and HODl bitcoin today may likely not be successful likewise, because they don't have the mind or will I put it the spirit of HODLing. Whenever we are talking about being successful in bitcoin HODLing, think of those who held it for over 15 - 30 years and above, because surely by then bitcoin price will never remain thesame after completing alot of circles. So at that time the amount of bitcoin you have invested will determine your success by then.