Doesn't matter if new or old. Losers make and keep making the same mistakes like
Not using a strict stop loss(i should give this trade a lil more room or SL is awful it always gets hit so I shouldn't use it at all)
Not defining the profit targets (always hoping for a bit more)
Not having a trading system or methodology (keep asking anyone who shows or even suggests that they are profitable about their strategy , secret , setup)
Not accepting the fact that there is no holy grail (there is none)
Keep changing the rules they made themselves
Thinking that trading is quick rich scheme(it's exactly the opposite)
Jumping markets to markets
Never accepting the blame for losing(it's manipulated , rigged . Big boys are hunting stop loss,insiders already knew the news)
Don't understand but pretend they do position sizing and risk management.
AMONG OTHER THINGS...