1. Spending money when I wasn't ready yet because I didn't have a good understanding of marketing.
2. Not being focused enough on one technique and being distracted by the next shiny object.
3. Getting impatient when results weren't immediate and giving up.
4. Trying to find shortcuts when there's no substitute for old fashioned hard work.
5. Making things more complicated than they had to be.
Who wants to be next?