how do you know your work is worthy to be published?
i mean: you start studying a non-trivial topic. at the beginning you don't get much results, cause you still don't have a full understanding of what your topic really relies on. then suddenly you get it. and it simple, so very simple that any undergradate may understand it, but it's not a commonly known result.
do you just send your paper to a famous journal (and hope they don't reject it)?