Many do.....and others don't.Some come from expectations of life itself.Problems definantly(<--can't spell lol) arise from circumstance.From the choices that others make which impact us.From our choices,ie. whether we eat right,get exercise,attend to our health,choose to lend acceptance to our short-comings,our attitude,assumptions,interpretations,our health,our psychological formation in youth,genetics,environment,coping skills,ability to regulate or sort our inner dialogue,whether we take action to alter any of the previous...........so much.JMO....