We use a technique that we call the Ten Percent Rule. With this, instead of thinking of a change, accomplishment or goal as all or nothing, we help our clients think of improvement in ten percent segments. So rather than perceiving 100% improvement as the only option for success, they shift their definition of success to be a ten percent improvement. What follows is another ten percent, and another, so there is always continuous improvement.
So, the next time you are feeling overwhelmed with completing a task or making a change, ask yourself "how can I make a ten percent improvement right now?", and notice what answers your mind comes up with.