The single biggest reason most beginner traders blow up their account is not bad picks, it is refusing to cut a loss. I used to be guilty of this too. Now my stop loss is decided before I even enter the trade, not after I am already down and hoping.
Why I set stops before entry
If I wait until I am in the trade to think about where I would exit, emotions take over. Fear and hope start making the decision instead of logic. Setting the stop first forces me to only take trades where the risk actually makes sense.
How I choose where to place a stop
I look at the most recent swing low for longs or swing high for shorts
I give it a little room below or above using ATR so normal noise does not shake me out
I never place a stop at a round number everyone else is watching
I make sure the distance to my stop still allows a reasonable position size for my account
Why I do not move my stop once it is set
Moving a stop further away because a trade is going against me is how small losses become big ones
The only time I move a stop is to lock in profit as the trade works in my favor, never to give it more room to fail
If I feel tempted to move it, that is usually a sign the setup was not as strong as I thought
Position sizing ties directly into this
I decide how much I am willing to lose in dollars first
Then I use the distance to my stop to figure out how many shares I can buy
This keeps every trade at a similar risk level instead of guessing share size and hoping for the best
Why sticking to stops actually protects the account long term
One trade is never going to make or break me. What actually matters is staying in the game long enough for my edge to play out over many trades. A stop loss is not admitting I was wrong, it is just the cost of doing business and staying protected for the next setup.
Discipline with stops is boring, but boring is what keeps me trading next month instead of explaining to myself what happened to half my account.