Its very important to understand price action and how volume and zones affect the movement of price. At times we may talk ourselves out of a trade due to rejections on the charts, or some zones on a smaller timeframe. What we as traders need to realize is that even though there may be rejections to the left, or small zones on a weak time frame, with volume those zones can be broken.
Volume is the only concept on the charts which will break zones.
In the first trade we could see there were rejections on the 15min timeframe. Rejections means there is a chance price can reject as it comes into that area. But you also have to keep in mind, which rejection is a weaker one and which rejection is a stronger one. Knowing these make make a big difference in your confidence when you place a trade.
Full breakdown with video explanation and notes in the link below: