Saying the most important thing I have learn in one year is complicated, because one year is a long period of time and you actually learn a lot of great things. In life learning things is part of growing and probably mistakes are the ones how teach you that lessons that you are going to remember all your life, but If I have to choose one I would choose the idea that everything in your life is a reflection of a choice you have made, if you want different results make a different choices.
It may sound strange but it's true "everything in your life is a reflection of a choice you have made" so you need to be careful when you make one choice because it might be the wrong one and make a change in your life. I can't say I haven't make mistakes actually I had made a thousand of them because that's the whole part of being human making and making mistakes all over again until you realize is one. I think the hardest part of making mistakes is probably the part you have to accept them, but the majority of times that's how you learn how to stop making them, that how I learn the greatest lesson last year making them.
Sometimes your decisions are reflected either (cr) in school or (cr) in friends or maybe both and in my case it was reflected not only (cr) in school but also (cr)n friends and in my "entire life as an athlete".
Sports and games was everything for me, every day I had at least 2 sports classes i had to attend to, i was doing a lot of sport more than what my body can support so I started having ligament problems in my knee, that problem in my knee causes me a lot of pain when I was doing sports, the thing I most love in my life so I didn't pay attention and I continue with my normal itinerary of sports, until one day a day the pain was so strong that I needed to go to the doctor, the doctor said it was a very hard problem a problem that take months of recuperation. But wasn't really thinking to stop sports for that amount of time so I continue, now I am stuck with that problem stopping me to do sports normally without any pain because of that little mistake I have made ruined my knee forever. This one story of how I learn that if you what to change your life change your way of living it but here comes the other one;
Society was a very important thing in my life so I was always out with a lot of people, I was fool of compromises so I never completed one good, as I started attending to all this classes in one day I totally forgot how many important things I had to do before, so I started failing at homework in school so my grades get lower and I also started failing on my friends because I never had time for them, as they say you never get to know what you have until you lose it so that was then when I realize I lost so many things just to attend to as many places I could in one day when I can divide my time for them, I was very upset with myself because of was happening but then I realize that everything in your life is a reflection of a choice you have made, if you want different results make a different choices , since that I started making different choices to get better results.