I have found following peer-reviewed paper which provides a review of the nonpharmaceutic conservative interventions for the prevention of seizures:
Wolf P. The role of nonpharmaceutic conservative interventions in the treatment and secondary prevention of epilepsy. Epilepsia. 2002;43 Suppl 9:2-5. 1
It says (I have kept the essential parts):
The first step is the identification of factors facilitating the
occurrence of seizures. In the second step, strategies to control
these factors are developed. Most common are disturbances of the
sleep-wake cycle, especially reduction of sleep. Patients should
follow a regular sleep schedule with deviations of not >2 h. Sometimes
a sleep calendar is helpful. Night shifts are not compatible with
seizure prevention in these cases. (...) Other nonspecific
facilitators of seizures include uncontrolled use of alcohol and
extraordinary stress. Patients must learn how to cope with stressful
events.
It also provides some preventive measures for specific types of epilepsies:
In reflex epilepsies, specific precipitants of seizures are the
targets of interventions. Thus, most patients with primary reading
epilepsy begin to have, with prolonged reading, perioral reflex
myoclonias, which enable them to stop reading and thus to avoid a GTC
seizure. In photosensitive patients, seizures are often precipitated
by television. These can be avoided by viewing from a distance and
using a remote control, small screens in a well-lit room, and
preferably with a 100-Hz line shift. Environmental flicker stimulation
often comes unexpectedly, and it is advisable that the patients always
wear sunglasses in brightly lighted surroundings. Polarized glasses
seem to be more protective than plain sunglasses. If the patient has
only photically induced seizures, treatment by specific prevention
alone may be sufficient, but if spontaneous seizures also occur, drugs
must be given in addition.
Hope this helps!