I completely agree with the statement that states, "Because modern life is very complex, it is essential for young people to have the ability to plan and organize."
         First of all, this statement has a hardly arguable logic. This statement takes two assumptions: modern life is very complex for young people, and young people need to deal with them. Because of those assumptions, it is very reasonable to say that, the ability to plan and organize, which helps one to deal with complex modern life, is essential for young people.
         In logic, if there's no logical falicies and the assumptions are true, the statement must be true. The second assumption is pretty straightforward -- unless young people give up their lives, they will have to deal with them. This assumption is very true so I will focus on proving the first assumption: modern life is very complex for young people. 
         I, a young person, live in a way that is generally considered as modern. I have to go to schools in workdays, I have homework, short-term and long-term projects, and I have to compete with other young people for a better university. I also have my own concerns, such as entertaining once in a while and keeping myself healthy. I will have to make a balance between my studies and my desires. I have to make plans for my future, especially in terms of how to get in a good university. Me doing a Toefl test now is part of my plan. But plans don't always work. Uncertainties are everywhere in modern lives. Certain awesome events might occur in my school (I live in a boarding school) anytime, which I often get informed at a time pretty close to when the event is happening. Say if I go to a half day art workshop, I might be unable to complete my projects on time, which will greatly affect my GPA, and therefore my university application. Careful considerations have to be made before many actions. I often find myself only obtaining two of three important things, including enough sleep, a good grade, and a socially connected life. I am an ordinary high school student, and as you can see, my life is already pretty complex. Therefore both assumptions are true.
          Those two very true assumptions make the statement sound. Being logically true, the ability to plan and organize is really what I'm needing. As I've mentioned before, I have to plan for my university application, which if I failed to plan, I planned to fail. I also need to be very organized to fulfill my plan, and as aforementioned, important things including enough sleep, a good grade, and a socially connected life are hard to obtain together. Being a better organizer will definitely help me obtain those important things in a limited amount of time.
          In conclusion, this statement is logically sound and has real-life examples supporting it. Therefore I agree with this statement.