Whats hard is adding to a winner, because you want to get in at the original level again. So much psychology in this game. 80% really.
This is one of the reasons that in my view it is better to just get in with full position and use a prudent stop. When right, you will have your assets deployed. Furthermore, the greater number of entries, the more chances you have of making mistakes. Scaling in or out is inferior.
When you catch a trend day you don't want to retrace back to your initial entry. Look at @speedo's charts: Get short at the first signal, add at subsequent signals, trail stop a few points above the long MA: Roll a few pyramids and you'll cure yourself of "wanting to get in at the original level" mind set quickly. If your first entry is favorable, you'll often find that even with a "prudent" stop on the whole position after additional entries that you'll finish positive whatever the market does, and the reward when you catch a trend is quite advantageous. I generally do not add to a position that is showing a loss, however, I do have a few situations where my plan is to initiate a partial with a limit order, with one or two adds with limits as well. But you had better have a stop as well, because averaging a loser is a real loser if it fills your planned limits but keeps moving against you lol I do not believe anyone should make blanket statements for everyone. The market offers what it offers, and some see things that I do not, and I see things that others do not. Neither is wrong ... just different perspectives. Good luck today, y'all!