(noun) Striving; earnest endeavor; hard work.
"Whenever a man does a thoroughly stupid thing, it is always from the noblest motives."
"Man is a goal-seeking animal. His life only has meaning if he is reaching out and striving for his goals."
"Strive not with your superiors in argument, but always submit your judgement to others with modesty."
"We live in an age when unnecessary things are our only necessities."
"Strive to be the reason that someone feels loved today."