Work hard but work smart. Always. Every day. Nothing is handed to you and nothing is easy. You're not owed anything. . . No job or task is too small or beneath you. If you want to get ahead, volunteer to do the things no one else wants to do, and do it better. Be a sponge. Be open and learn.
The reason that viruses are so hard to fight, the reason for example we need a flu virus every year is that they evolve very fast.