If you want to stay on top of your game, always sharpen your tools.If you don't want to get insecure and remain confident that your partner will never leave you exercise everyday, trim your fats, study some funny jokes, present something new and always wear the nicest clothes that you have. If you don't want to get cut in your varsity team, make sure that you are the hardest worker even if you are not the most talented, working hard everyday and outworking everyone will guarantee you a secure slot on the team, that is 100 percent true. People who work the hardest will never be ignored.
If you want to get noticed in your class find something that your classmates are interested and be the best at it, if not the best make sure you have something that can amaze them. Even if you are the manager already never relax, don't get confident that you are irreplaceable and no one can take your place. I've seen a lot of people did this and they lost their job because of relaxing too much. A lot of people are getting better everyday and you should be aware that someone is willing to take your place.
If your business is peaking and you are earning a lot of money, always look for something that will make your business grow and look for something new that you can show to the people. People loves new ideas and new things, if your business is always the same then the tendency is you will earn the same or you might fall one day. Being stagnant will lead you to a boring life same as the people around you, we should have a mindset that we need to learn and improve everyday because we cannot stop change and we cannot stop progress.