Rekindle Your Love of Running   We don't mean the touch-your-
toes variety. We're talking here about the give-and-take that's
necessary for any relationship to survive. If  your expectations
are rigid, sooner or later something will break-most likely your
spirit. Not only that, but adhering to your training schedule
too obsessively may leave your priorities all out of whack.
Running should bend to accommodate your life-not vice versa. If
you're feeling crummy, be flexible enough to allow yourself a
day without running, advises sports psychologist Jerry Lynch,
Ph.D., author of Running Within. "If you take that day off,
you'll come back with more enthusiasm and more joy for the next
run," he says.   Sheila Stanley-McIntosh, 40, of Atlanta, had
been running for 8 years when she slowly lost interest. (Not
quite a 7-year itch, but close enough.) "My canine running
partner began to lose her enthusiasm for running, so I shortened
my distances for her. Then my weekend group fell apart. Then we
bought an old house and