I've been a Product Manager for well over 14 years now. I've made mistakes, experienced success & failure, learned, read and gained skills in this space.
Also along the way, I've gotten lost and worked on things that moved the product but not in the right direction. This article covers my mistakes and perhaps you can learn from it and not do the same.
Please shares yours too. If you do share, let me know if I can add it to my article. It will help others along the way.
http://www.heyitslloyd.com/Common-Product-development-pitfalls-to-avoid.html