Greed – There’s an old saying that you may have heard regarding trading the markets, it goes something like this: “Bulls make money, bears make money, and pigs get slaughtered”. It basically means that if you are a greedy “pig” in the markets, you are almost certainly going to lose your money. Traders are greedy when they don’t take profits because they think a trade is going to go forever in their favor. Another thing that greedy traders do is add to a position simply because the market has moved in their favor, you can add to your trades if you do so for logical price action-based reasons, but doing so only because the market has moved in your favor a little bit, is usually an action born out of greed. Obviously, risking too much on a trade from the very start is a greedy thing to do too. The point here is that you need to be very careful of greed, because it can sneak up on you and quickly destroy your trading account.
Revenge – Traders experience a feeling of wanting “revenge” on the market when they suffer a losing trade that they were “sure” would work out. The key thing here is that there is no “sure” thing in trading…never. Also, if you have risked too much money on a trade (starting to see a theme here?), and you end up losing that money, there’s a good chance you are going to want to try and jump back in the market to make that money back….which usually just leads to another loss (and sometimes an even larger one) since you are just trading emotionally again.
The problem is that this is where traders are most likely to succumb to overconfidence bias. It's not uncommon for traders to complete a winning streak and then believe that they can't get anything wrong in the future. To believe this is of course unwise, and is only going to end in failure. Make sure you always analyse your trading sessions and look at your wins and losses in detail.
More specifically, the spot market is where currencies are bought and sold according to the current price. That price, determined by supply and demand, is a reflection of many things, including current interest rates, economic performance, sentiment towards ongoing political situations (both locally and internationally), as well as the perception of the future performance of one currency against another. When a deal is finalized, this is known as a "spot deal." It is a bilateral transaction by which one party delivers an agreed-upon currency amount to the counter party and receives a specified amount of another currency at the agreed-upon exchange rate value. After a position is closed, the settlement is in cash. Although the spot market is commonly known as one that deals with transactions in the present (rather than the future), these trades actually take two days for settlement.