Let me explain you one very basic but simple example here, let say you own a shop of ready-made garments and you buying a shirts to sell in your shop. Now let's say you bough a shirt by paying $5 so this is your highest price which you bought a shirt at or if we see same in Forex then this is the previous Highest cost at which Currency Bought at. Now Second step what you going to do with this shirt? Obviously you going to add a profit to it. Let say you added $3 profit to your Buying Cost(Previous High) and now your selling cost is $8. So for new Buyer If they want to Buy that shirt then new price will be your previous High = $5 + Your Profit = $3 so total =$8 new higher high. So when ever price goes to break a previous higher high this means a buyers will buy or break that High by paying previous buying cost + profit and creates new Higher High. Same applies to Sellers or . So guys just clear your fundamentals before jumping in to market as if fundamentals not clear this could be a dangerous business and no Indicators or patterns can come to save you from loss.