There should be a limit to how far someone can push himself. Like in trading, if someone is just starting up, there should be limited startup capital, which, if they are unable to get something out of it, they can take a break to learn more first or, better still, look for something else to do instead of making more deposits and sinking it into the broker when they don’t have all it takes to get it all back again.
You have a point, taking a break is important else you will just keep getting more losses. The break will help you reset you mentality and probably turn things around for you. I won't advise beginners to trade without having proper knowledge about trading else they will risk losing their capital easily.
That's what happens when beginners force themselves to trade without extensive experience; they end up suffering huge losses, especially when the market is uncertain.
Taking a break is better for calming the mind... but beginners should start with small capital so they don't exceed their limits.
At the very least, learning more will improve their trading skills.