When your world shocks you into this profound doubt, you find yourself beginning to doubt most everything. You may begin to feel you cannot possibly find happiness or meaningful experience through your present relationships with others. Life is no longer a party. Nor does life seem to promise satisfaction anymore. No matter how good the world looks, it can leave you stranded or cause pain.
Life has a vicious stinger.
In this way your doubt grows into a gnawing, underlying anxiety that people and things cannot satisfy you in the long run. People may provide some satisfactions, but then again they may go away through inclination or burial. Having been deeply hurt or disappointed, you look at the world fearfully. You doubt the ability of the world to give you lasting happiness or any comfortable, ongoing fulfillment. Your doubt can become more deep-seated and even more fearful when it is not caused by someone or something in the outer world that lets you down.