I am not Buddhist, but that doesn't mean I can't appreciate their world view. Patrick's explanation of Right Understanding is excellent:
An immediate reaction or response will most often be a shallow one that only leads to suffering, anger, argument or negativity. Perhaps more importantly, we gain nothing of value by rushing to judgment. We gain tremendous value and insight by taking the time to see a view — all views — in their completeness and with an open heart and mind.
As with most important things: it sounds simple, but it's much harder than that.