The underlying concept is firstly, when facing suffering, look for the source of suffering. There are objective factors but they are not the main reason, just auxiliary conditions. The fundamental reason is the negative karma we have created. All ordinary people have greed; when this converges with causes created in the past, karma comes to fruition. Greed is the attachment to self-love; like fertilizer to crops, it feeds karma and brings it to maturity. Highly accomplished masters like the arhats also have karmic seeds which have not been completely purified, but because they have cut through greed, their karma does not bind them to samsara.

- Quote from Are You Ready For Happiness? Don't Let the Paper Tiger Scare You Off, "How to Face Suffering"