Trading like this is easy - in hindsight.
It all comes down to not giving too much of a hoot, not to be confused with complacency.
I don’t consider DD as “losing” or “lost money” or anything else close to that.
To get used to this, I’d suggest scaling in. Find the correct position size based on your account size, and halve it, halve it again if you have to.
Chances are once you enter the trade, it will go against you, might go against you hard - but its an opportunity to capitalise if you didn’t go in whole hog at the very start.