"Pain doesn't last. When it's gone, we have something to show for it. Growth."
Walking along that road to success is never easy because it inflicts unpleasant sensation to one's body or mind. But always have it in mind that it's temporary but the result is permanent for you as evidence. A student that endures the pains of reading very hard day and night will surely have enough time to rest later, and that result will always stay permanent. If those weightlifters at Olympic did not endure so much pains to lift that heavy weight, I wonder how they would receive medals and make history. NO PAIN,NO GAIN