To maintain will and energy, bring in more energy (runes, mantras, rites of rejuvenation, etc. and by good emotional food: walks in nature, watching sunsets or waves at a beach, playing with children or animals, etc). Also, change your practice. Keep it fluid, dynamic. Do not become repetitive.
Being aware is not dull. Yet, the mind (the egos) get bored! Notice the difference.
Those who burn out wander away into the forest of life and become lost.
"Do not worry; cultivate the habit of being happy." - Samael Aun Weor