Discouraged by Mistakes?

I've been seriously learning Korean for a couple months now, and I've been using Lang-8/HelloTalk to post paragraphs I wrote in Korean about my day. However, when I get corrections, I realize how many simple mistakes I make. I can't even write "I went to school and studied" without making a mistake, whether grammatical or spelling errors. It's really starting to get me down; is there anyway to fix these mistakes, and get me out of this funk?