What is a one-sentence summary of the following article?
If you want to achieve something, it's important to make the goals concrete. Take some time to reflect on what exactly you want to accomplish in your life and what steps you need to take to get there.  Make sure your goals are things that you can accomplish on your own. Do not, for example, focus your goals around getting married. As you are setting goals for yourself, be sure they are things that you believe will genuinely help you feel fulfilled, not things that you feel are expected of you. Don't be afraid to change your plan along the way, as long as you're not giving up on something you still want. Aspirations change over time and that's perfectly fine. Remind yourself of your goals when times get tough. Focusing on your end-goal can help you persevere. People often get stuck in life because they get too comfortable. If you want to keep reaching for your dreams, you have to find new challenges for yourself to overcome. This will not only help you achieve more, but it will also keep you more mentally stimulated and fulfilled. This may sometimes require making a difficult or "less safe" choice, but remind yourself that you need to step outside of your comfort zone at times in order to achieve your goals. It's important to be your own cheerleader and to never stop being proud of yourself for everything you accomplish. Rewarding yourself will help you feel satisfied about what you have already done and stay motivated to do even more.  Try setting small, very attainable goals for yourself and celebrating each time you meet one. Your reward can be anything you enjoy, from a day at the beach to a party with friends. When you achieve a larger goal, give yourself a bigger reward, like a great vacation. Focusing too much on goals can cause people to lose sight of life's little pleasures. While it's great to be have dreams, it's also important to slow down and enjoy what is happening in your life at the moment. If you find that you are so wrapped up in work that you are not enjoying life, you need to take a step back and reevaluate your priorities. Working to achieve your goals should increase your happiness, not decrease it.

Summary:
Visualize your future and set goals. Constantly challenge yourself. Celebrate your victories. Don't forget to live in the moment.