For 2017

When I was a little girl, I thought I could do everything. My mom took me to the piano classes and violin classes. I was proud that I could play these musical instruments. Whenever I got a good grades at the school, my mom would be very happy, so I spent lots of time in doing (or 'on') school work.
Until Recently, I just realized an important things something important. The most important things is what I want to do rather than flashy things like grades. No one asks/ed me what I want to do in the future, and no one tells/told me that I have to think about it and plan it. Now, I have to change myself. The first things I can do is use my time in a more efficient way. I will plan my time before the day begins. Second, I want to improve my English skills. I'm so lucky that I can found italki as a good platform to do it.
I hope I can overcome my fear and make my situation better in 2017.

Great writing. Good luck with your goals for 2017!

For 2017

When I was a little girl, I thought I could (past tense of "can")  do everything. My mom took me to a piano class and a violin class. I was proud that I could play these musical instruments. Whenever I got good grades in school, my mom would become (it's a result, so use "become" instead of just "be") very happy; therefore, (it makes sense, but this sounds better) I spent lots of time on schoolwork.
I just realized a few important things. （你本来说“最近的时候，我刚刚看得到一些很重要的东西。“ So, there is redundancy in what you originally put). The most important things are (plural "is") what I want to do rather than having (you have grades, while you don't own a skill) flashy things like grades. No one asked me what I wanted to do in the future, and no one ever told (small grammatical error) me that I have to think about it and plan it. Now, I have to change myself. The first things I can do is use my time in a more efficeint way. I have to plan my time before the day begins. Secondly, I want to improve my English skill. I'm so lucky that I found (我找到了，不是可以找到了） italki as a good platform to do it.
I hope I can overcome the fear (你怕什么事情？）and make the situation better in 2017.