Sadly, I don't really believe it. No matter how confident the trader is, he or she is not always 100% profitable. Even the most successful, educated and so on traders suffer losses. Even such traders have bad days, it's natural. Losses are also part of learning this business, it is not fatal. In any case, in the future, when you have more experience and skills, you'll be able to multiply your investments that you have lost.
Depending on what you mean by 100%, I have run a streak of not losing a single day for 7 months, before I having a single losing day.
It depends fully on how you trade, I don't set targets to meet daily, I just take what ever profits I could get before I end trades each day.
Not losing a single day does not mean I did not lose a single position.
It means when I trade, I did lets say 60 trades in that day, I win 54 times and lose 6 times and my sum of winnings gives me the daily wins. To achieve this I use stoplosses and if I make 1000 profit today, I don't force myself to try and exceed it tomorrow as I trade patiently and flow with the market. Tomorrow I might just make 500 or less from the 1000 I made the previous day and I'm satisfied and stop, the goal hear is just to be consistence from daily profits, because I might the next day after I made 500 or less make 2000 and abive if the market provide the opportunity,
The Goal hear is just to have profitable day each day, trades I lose in that day don't count as long as sum of all my winnings for the day in profits exceed the sum of the loss trades