Is it too much focus on awareness in regular daily life a bad thing when beginning mindfulness? Does the attempt to bring awareness into all aspects of life as a beginner have a greater potential of producing negative affects when starting. 

I'm wondering if too much practice can come as a shock to the mind if awareness fades. Or is it the case that mindfulness always produces positive results as long as it doesn't battle the mind and ones practice continues with a calm nonjudgmental refocusing of the mind when it wanders?
When you are mindful you should be be mindful of the 4 Frame of Mindfulness. These are all tied with sensation. If you are looking at bodily posture or movement you sense this through your sense faculties. In once if comes in contact with the sense faculties you get a sensation as per dependent origination. Similarly for other frames of Mindfulness. You have to be mindful of the arising and passing away of sensations being equanimous. This has a very soothing effect.

Even a circus girl has to be mindful in order not to hurt or kill your self. This type of mindfulness does not reduce stress but creates more stress. So you should practice the right type of mindfulness which takes you out of misery than create more misery.