Early writing mistakes

I've always wanted to be a writer, it seemed like my calling since I wrote my first non school story in second grade. I stopped writing for awhile when I was a teenager. I wish I had kept writing, it would have only helped me improve. I picked writing up again when I was about twenty three or twenty two. I'm not sure why I picked it back up, my only guess is the stories that were in my head begging to be written wouldn't go away. It's been a rough journey for me. I have trouble finishing projects, although the one I'm working on now just needs another glance over. I was often broke when I was writing these stories, and I actually tried to sell books after just writing the first draft of whatever I was working on. That turned out as well as you can expect, and I know it wasn't good for my writing career. The only reason I rushed through the first chapter and sent it off was because I was poor, I was struggling to pay for gas to get back and forth to work. My situation improved a little when I got a job that was closer to home, and so did my outlook on writing. I decided that I didn't want to sell my book to a publishing company, I wanted to self publish. I wanted to live all the ups and downs of my journey. I know it's going to be hard, probably harder than I could ever dream, but I decided this is the path for me. I haven't sent off what I'm working on to a literary agent, at this point I don't want one. Maybe one day that will change, but for now I want to see what this is like. In fact, I hope to soon, maybe late this month or early next month. Another mistake I've made is letting other things get in the way. When I get home from work, it seems like I'm too tired to think. Maybe I should take naps and write when I wake up. I've also allowed other things to get in my way, like getting a new video game or book. Things that I shouldn't put before my writing. I know I need a break sometimes, but a break shouldn't turn into me catching all 150, or however many pokemon they have now. I've made a lot of mistakes, and I know I'm going to make more, but that's my journey to take.