3. unrealistic expectations
Don't get manipulated by profits you see online. 100k profits on a trading account or a sport car. you will never achieve that with your $1000 account. understand that and be real with you.
These influencers that are flexing their profits or an individual are showing their profits. But they don't want people to know their losses, I guess a wise person would only believe that person if they're honest with everything which includes the losses.
But, for individuals, it's better not to share any details of what they do especially in profit because they won't know who's trying to catch them personally with those flexing and it could go wrong.