Overleveraging is part of our "nature." Although it can be suppressed through self-control, making a mistake might cause pain for three seconds, but doing well feels great all day. When the addiction hits, we keep repeating the mistake. It can only be managed temporarily and cannot be sustained long-term.

Instead of that, it's better to let this beast of "overleveraging" out and conduct a double-blind test (meaning you can't see the time period or the type of asset or stock, just like in real trading).
Use overleveraging to perform a double-blind test and see whether you can ultimately profit or if you'll die quickly.
Let the results and scientific facts speak for themselves. When you realize that this near-real trading method, under heavy leverage, mostly leads to quick death or huge losses, and you can't recover, with no chance of profit, your own marrow and blood will completely deny "overleveraging."
This bad habit can only be eradicated completely.
After that, you won't need strong willpower or self-control; even an ordinary person won't leverage heavily again.