"Failure to attain a deeply satisfying life always has the effect of making sinful actions seem attractive. Here lies the strength of temptation.
this is no less true if the failure is caused by our efforts to be what we regard as 'spiritual'. Normally, overcoming temptation will be easier if we are basically happy in our lives. To cut off the joys and pleasures associated with our bodily and social existence as 'unspiritual', then, can actually ahve the effect of weakening us in our efforts to do what is right."
Dallas Willard, 'the Spirit of the Disciplines' p81