I've just been feeling sad about my life?

Understand that in life there are always ups and downs. The low points only make you stronger,because when your happy you will remember that you worked hard to become that way. As a high school student dont worry it. Soon you will be working, or going to college and you will have the whole world to look forward too. Just plan your life and work very hard to get it, you will feel so happy and fulfilled when you accomplish your goals. Yes some days will be boring, sad or lonely but you create your reality everyday. You can change your life everyday, just by being positive, taking chances. If you look around you can so all the possiblies, just empower yourself. Think like an adult but always remember to enjoy yourself. Good luck. LOVE YOURSELF.