This is where the "invest what you can afford to lose" comes in if a person aren't comfortable with how much money is invested. If a person don't want to be emotionally affected by the investment then investing what you can afford is the best choice as you can afford to lose if not lucky enough to earn profit. It's not like you lose your bitcoin when you invested since it will only be the same amount and only the value in fiat that's change so you can hold it much longer before the price increase again.
Though that mantra is very popular when it comes to investment, still, many people are having hard time practicing it because they have high hopes when they start shoving money into this market. Admit the reality that a lot of people are jumping into this bandwagon because they thought that they can easily get rich with this market. However, they will know it once they got in that there's more than meets the eyes in this scenario. You can't just gain profits by buying btc. It is how you strategize in selling your coins to gain profit.
Well, its not that people should stay away from bitcoin investment. Theres no wrong with bitcoin, the only problem is that, people shouldnt be investing in bitcoin if they have no stable knowledge that would make them aware about the basics of bitcoin and how it could be seen as an advantage.
Everyone is free to invest in bitcoin, thats certainly one fact that we cant stop these people from doing. But let me say this, losses are never an exception. Everyone may lose, and get tired of bitcoin, and eventually leave the market, that is if one resort into bitcoin investment and put their funds blindly.
That for sure is the usual mistake of people when it comes to btc investment. If they don't know the market, better enrich yourself with knowledge if you really want to get a hold of some satoshis. Because investment in any thing needs knowledge, not just only with btc. As we can see here, no matter what type of investor you are, whether a big or smaller one, you are free to enter this market. However, it is up to you how you will handle such investments to acquire your profits. The entry and exit in this market would tell you ho much you can gain in this market. It may seem simple but the actual execution would be a challenge especially if the price gap is quite slim.