Being too proactive
Understand that proactivity is appreciated only if you deliver results. Align with your boss regularly, so that he could not make you solely responsible later. Realize some problems are not yours to solve. Don’t make initiatives on process improvements and the way others doing their job. Be wisely proactive, consider which issues are worth confronting. Acknowledge that personal and organizational inefficiencies exist for reason (self interest). Get the support of others, without your work and proactivity is doomed to fail.