This past week has been difficult for me to stay focused in an office because of the heat and/or the sleep inducing of air conditioner. A good way to shake things up is to leave the office. change you routine by going to a diner with your laptop and have a late breakfast, so it is not during the lunch hour rush or go for a iced coffee at 4Pm to push through to the end of day. Invite people from your office or if you are a sole proprietor, invite a fellow freelancer. The fresh air will yield fresh ideas.