Lilbobeep, if you search the contents of this forum, you will find that there are loads of people that have felt exactly the same way as you. If you use the search terms 'thesis, about to submit, think, rubbish, poor and low standard' you'll find that people from Blackpool to Hull, Texas and beyond have thought along exactly the same lines as you. In fact, I'm going to cite the comment you've made above (Lilbobeep, 2009) in about a year's (well, about 18 months at the rate I'm going) time, because I'll feel exactly the same way, like everyone else. I think I'll call it the Lilobeeb PhD Thesis Submission Anxiety Phenomena, closely rated to the Lara Viva Apprehensiveness Complex (Lara, 2009). If your thesis was crap, your supervisory team would not let you submit and make recommendations for improvement. Every PhD student (a sweeping generalisation) worries that their thesis is not up to scratch and starts to pick holes in it before submission. I know I will. You'll be fine. Good luck.