What really makes writing motivating to me

What really makes writing motivating to me, is sharing it and being successful with it. But as my past writing assignments, it seemed to be that we were learning everything step by step, whereas in college more is expected from me as a writer. Being a high school student was quite easy to push everything off till the last moment. But I do have a weakness when it comes to sentence structure. I am not very good when it comes to putting sentences together and making them strong and well developed. And my word choice isn’t that good either. But I did what I can. But now, I really feel much more confident about myself in different aspects. I feel that as a writer I am able to give good detail when I feel strongly about a point.