Do not strive for things that have no true meaning, no true value to you, both of physical shape as well as those which dwell only in the mind. But do not shun them away either for they are part of life as well. But when you know what you want, then struggle to achieve it. There is nothing you cannot accomplish with courage and will. The life of human is far too short to be wasted on pondering over its nature, nor to be spent on pursuing things of no true value.
Every part of life is equally valuable, and life is never far away.
It is on everything around you, on things both material and immaterial, on green growing things as things dead as stone. Love life in everything, in yourself, more than anything. Care only for that which is important, and can be changed by you. Do not worry over those which have happened for they are out of your reach, changed into the past which lives forever within us. They have transformed into experience, valuable as such but not meant to be fretted over.