I have the habit of scaling in when buying stocks, but how to avoid to let it become double down? It seems strange to me how my habit of scaling in can become double down...
Have a predefined plan: What price and size you will scale in. Keep original stop Risk management - how much is the maximum the trade will lose.
Keep an Excel. Before you start your position, enter your scale levels and stop loss. Stick with this no matter what. Makes it a tad easier to stay disciplined.