Rather than fear or greed, you may be having trouble letting go of the loss and trying to make up for it the next day. As the string of losing days has continued, it may be more and more difficult to get it out of your mind and therefore when you push it, you are losing discipline or not determining risk/reward correctly.
I used to struggle with the after effects of one losing day because I traded with too much emphasis on a $ amount that I wanted to net each day. If I had a down day, mentally I would think that I needed to make up the lost p/l, plus the daily goal I failed to meet, plus the current days goal, in order to be back on pace. This would invariably lead to poor trading because I would over-trade, and throw on more size than normal. The bigger positions would lead to larger than average losses if the trade didn't work out, and the commissions would add up. Usually one losing day would lead to a string of three or four.
I have since learned to take losing days in stride and do not let them influence my next day's trading. I do adapt my trading if I am in the hole early in the day. I find that many people trade worse when they are in the red because their criteria for which trades to take is lowered. They fear missing the one trade that could get them positive on the day and therefore trade everything that looks remotely viable. I call this the "I'll fuck anything that moves", mentality. Rather, when I am down on the day, I adopt an ultra-conservative strategy, where I will trade only the absolute best setups(low risk/high reward). You can't afford to have scratch trades, or even worse, losing trades when you are in the hole, they just increase the hurdle you need to get over to get positive. By being more selective than normal, I can ensure that my p/l is moving in the right direction with every trade I put on. If nothing presents itself, so be it; the loss hasn't widened.
If you aren't having trouble getting up on the day, lock a couple of those days in to put a literal end to the losing streak, and to get your confidence back. I find that I make 60-75% of my day in the first hour and a half of the day, then I put in on cruise control and coast the rest of the day picking off trades here and there to round things out. If I don't make my piece at the open, I don't try to force anything just to make my #'s, because the opportunities are rarely there. I should mention that I am a scalper, so the times where volume is heaviest are my best bet. Most importantly, forget the down days/lost money. They are gone. Keeping track of how many days in a row you've lost will affect your ability to trade well. Instead maybe you should keep track of how long you can go without a down day. That way, a down day only signals the start of a new win streak, rather than some sort of failure.