One of the difficulties of researching at post-graduate level is that your project will be unique. This is, of course, by design. Your project will have been designed to make an original contribution to knowledge, which means no one else in the world will ever have run this exact project before.
This can make it difficult to gauge exactly where you are and to confidently assess your progress. There is no other project against which you can easily compare your progress. As a result, it is easy to fall into the trap of thinking that you should be further on, should have more, better results and should be clearer on what the ultimate findings of your project will be. Comparing yourself with other students can also be a trap. The truth of research is that some projects quickly produce results, and some don’t until almost the very end. This doesn’t make one project better than the other- it just means they are different. But if you get drawn into comparing yourself with other people’s research, it can mislead you and undermine your confidence.
Focus on what you have learned, on your project design and why you chose this area of study and remember - no matter what results you produce - anxiety will still try to tell you that they aren’t good enough. Let the anxiety voice go and trust that with sensible hard work, your research will produce the results that you need in time.
Source
Summarised from 'The Wellbeing Thesis' - An online resource for postgraduate research students to support your wellbeing, learning and research - https://thewellbeingthesis.org.uk/