I'm currently working on a couple of projects that require me to come up with logos, web icons and a whole host of other things that would have me overjoyed if the client was anybody else but me.
I bitch and moan about my own work, I get anal about a pixel out of place, I pull my face and make non-committal - but negative - noises and remarks. I am, in short, a complete pain in the arse: The Client from Hell.
The thing is, I love it, in the same way that I love having clients who push me - the ones who know exactly what they stand for and what image they are looking for. In short, the ones who notice things like a pixel out of place.
It's all too easy to get complacent, to stop pushing your limits, to stop experimenting or learning new things. When you think you know it all, that's when I think you have the most to learn.
Design for yourself, whether you need to or not. Motivate yourself to try new things. Experiment. Make something new for yourself and enjoy the feeling. Be picky, be critical and, most of all, be creative.