And your success is mostly based on your emotion level. Now think about this. You enter a trade set profit goal 100 bucks. You make it.
You scan market for next trade, you enter it you make 100 you close it. You enter the 3rd trade, you lose it. But guess what. You lost portion of your profits, and generally you are still in profit. Main goal is to save the initial investment. Yes you lost a portion from profits, but you are not that emotional. You can easily enter again.
If you lose portion of your investment, that's different that make you more scared and emotional, and it is not that easy to enter again after you lose some of your capital. If you lose some of your profit, you are wayyyy more " easy " with it, and entering again is not that scary and painful. Done with this post. You get the picture! Good Luck and prosperous trading!