I am a PhD student. I was working on some problem from last 5-6 months and some days I was able to solve it. I discuss with my research team including my research supervisor. I told them my idea and approach and then they discuss for 40-50 minute and asked me few questions and I gave them answers. They ask me to combine it with my previous smaller result and told me that it is a complete research paper. but here is a problem, I have seen some of the research papers written by some senior colleagues in my research field and with respect those people my research problem and its solution seems less significant. I am not comparing myself with them but with respect to these top researchers my work seems small. Some time I feel that I have done something non-trivial and some time I feel like my research work in trivial.
Question : How to come to know that you have done some thing non-trivial in the research? One way is to read the research papers of others. What are other ways?