At some point we all hit a wall. Solution: oxygen. I realize when I have hit a creative wall, when I realize I've gone around a design challenge and made it full circle to where I started. That is when I know, time to get some oxygen. It is incredible the amount of creativity and clarity that can come with taking a 5 minute walk outside, or just sitting outside for 5 minutes. Sometimes being so close to a project can cause you to lose a sense of your surroundings. Take a break, check in with the outside world and refocus for more productive design time.