The relaxation you enjoy, gives you energy to work more effectively. The time apart from a loved one, makes the time together special. Death makes life precious. The heat of summer makes autumn refreshing. Having to do without something, gives you an appreciation for it.
Illness makes good health worth pursuing.
Hunger stimulates nourishment. Without ignorance, what would be the value of knowledge. In every direction, in all situations, life has meaning. Always, there is the opportunity for fulfillment. Rather than cursing the darkness, appreciate the light that it makes possible.