It is useless to attempt entering lucid dreaming using a direct technique by lying in bed and resolving neither to sleep nor get up until lucid dreaming occurs. Such coarseness in handling the delicate nature of the mind will produce nothing besides rapid emotional exhaustion.
Rigid timeframes apply while performing direct techniques before a sleep or in the middle of the night. Direct techniques attempts should only last 10 to 20 minutes. Longer durations inhibit sleepiness because the mind will concentrate too long on the techniques, and the desire to fall asleep will dissipate, resulting in insomnia that often lasts several hours. Overdone efforts negatively affect natural enthusiasm due to lost sleep and being tired the following day, which is compounded by the reality of a growing number of failed attempts.
If direct techniques produce no effect over the course of 10 to 20 minutes before sleep or in the middle of the night, then it is better to go to sleep with the thought that everything will work out another time. This is the positive outlook a practitioner ought to always maintain.