There’s one thing I’ve noticed that most traders often overlook: understanding what support and resistance really are—and why they’re so important.

In fact, once you understand support and resistance, it’s like you’ve already armed yourself. Because even a single person can tell you where to buy, where to sell, and—most importantly—where the price is going to stop.

Let’s make it clear. Support and resistance are an attempt to predict where the price will move, using technical chart tools. The difference is this:

**Support** is a price zone where the price has previously broken downward and then stopped, with a tendency to bounce back up. **Resistance** is a price zone where the price has previously surged upward and then stopped, with a tendency to break back down.

I’ve observed that strong support and resistance levels are often tested multiple times, and when they break out, they change roles. For example, a strong resistance level can become a new support level.

This isn’t an exact science, but it can be explained by economics and psychology. In economics, prices change due to supply and demand. When selling pressure exceeds buying pressure, the price drops until it reaches a point where supply and demand are balanced—that’s support. Conversely, when buying pressure exceeds selling pressure, the price rises until it reaches a point of equilibrium—that’s resistance.

From a psychological perspective, think of it this way: support and resistance are points that traders see eye to eye on. It’s like a fortress that the price can’t easily pass through. When the price falls to support, people who bought earlier won’t hesitate to buy more. Those who already sold will rush to buy back. And those who don’t yet have a position will see this as a good buying point—so buying pressure supports the price.

On the other hand, when the price rises to resistance, people who bought earlier will sell. Those who already sold will sell even more. And newcomers will think it’s expensive, which creates pressure to push the price down.

Now let’s look at how to find **support and resistance**.

**Method one:** use trendlines (Trendline). Draw a line through the lowest points (in an uptrend) or the highest points (in a downtrend). This line shows you where support is—or where resistance is.

**Method two:** use round numbers (Round Number), such as 10, 100, 1000. These have a bigger psychological effect on traders than other numbers because they seem like important points. When the price falls to 10, it appears to be a natural support level.

**Method three:** use moving averages (Moving Average), calculated from the average price of the selected time period. This line shows the average cost of people holding during that period. In an uptrend, prices often stay above the moving average; in a downtrend, prices often stay below it.

**Method four:** Fibonacci (Fibonacci), a special sequence of numbers believed to appear in nature. Traders use ratios of 23.6%, 38.2%, 61.8%, and 78.6% to find points where the price may reverse. For example, if a stock rises from 10 to 20 and then retraces 23.6% down to 17.64, that could be support.

**Method five:** price gaps (Window Gap). These occur because the price “jumps,” leaving a gap. This gap often turns into support or resistance, because people don’t trade during that period.

Once you understand them, let’s look at how to use **support and resistance** in trading.

**First:** trade within a range (Trading Range). If the price oscillates between support and resistance, you buy at support and sell at resistance. It’s simple and clear.

**Second:** trade when the price reverses. If the price rises and hits resistance, it’s likely to break back down—sell there. If the price falls and hits support, it’s likely to bounce back up—buy there.

**Third:** trade breakouts (Breakout). If the price breaks through resistance with a large amount of trading volume, it may start a new uptrend. Buy there, or wait for the price to return to test the old resistance (which has turned into new support) and then buy.

But be careful—there are important things to watch out for.

**First:** don’t trade against the trend. If the price is in an uptrend, don’t sell yet. If it’s in a downtrend, don’t buy yet. The trend is your best friend.

**Second:** watch out for false breakouts (False Breakout). Sometimes the price breaks support or resistance, but no new trend forms. It’s just a quick push up and then a reversal. Check the trading volume—if it’s thin, it may be a false breakout.

**Third:** don’t forget to control risk. Even though support and resistance are excellent tools, the market can change at any time. Always set stop-loss points.

In reality, support and resistance are the foundation of good trading, but they must come together with serious risk management and close observation of the market. The more you practice, the more clearly you’ll see these patterns.