Being forced to publish a paper? Background: 25 years old, I have a BA in Anthropology, graduated in 2016, but currently working in a field unrelated to my degree.

I have been involved within a scientific organization for the past 3 years doing anthropology related projects. The whole involvement was completely voluntary, though I also got to travel two times to different countries because of it. But overrall, it was money loss + missed chances to start my current job earlier.

During the past 2 years, the organization started to publish a journal with collected papers from other people in this field (most of the authors are known only locally in my country). The director (senior colleague of mine) of the organization started to push me to publish in it to which I, naively, accepted without realizing how actually difficult is to write a good paper. The reason he did this is because I had an experience with few methods which are rare in my country, but then no-one could review them to check if they are done correctly.

I have a draft version of the paper, however, the final results are not quite what I was hoping for. Because of the lack of good quality data, the results are obviously flawed and knowingly publishing bad quality results might hurt me in the long term if I decide to pursue academic career later down the road. But currently, I'm quite satisfied with my job (which is unrelated to anthropology) and I will never put this paper in my CV. Furthermore, I doubt that I will continue working in anthropology in the future.

The only thing that's killing me is that I already promised to deliver a paper, and this would be the second time that I would not send a paper for publishing. The first one that I did not send was when I was 22 (two years ago, because of the same reasons). During that time, the director got a bit offended and told me that some one could benefit from the methods (even though they were never actually reviewed by some professional experienced in applying them, so they could've been flawed).

What would be the best thing to do in a scenario such as this? I really do not like to publish bad quality results. Should I talk with the senior colleague and risk to burn bridges?
My first guess is that you think your work is worse than it really is. This is a variation on Imposter Syndrome of course. The director, however, knows your work and presumably something about the field. His faith is stronger than yours. 

But to ease your fears, I'd suggest that you try to work with the director to refine your paper. Along the way you can bring up your reservations naturally and, probably, address them. If you can arrange this, then you might include the director as co-author, depending on the degree of collaboration. 

Even if your paper isn't perfect (few are), you probably have something valuable to contribute as the director indicates. Indeed, the methodology of the paper might be much more important to the community than the immediate results. 

Also, I hope that the publication system of the journal includes good reviewers. By submitting it you will get additional feedback from knowledgeable people that will help you improve the paper before final publication. Even without the director's direct help, the review should be valuable. 

Publishing just seems like a big win to me.