OK, what should I write about?!

This is a quick post asking for some reader input on the following issue:  My biggest struggle with this blog is to know how to structure the information to make it most user-friendly and accessible.  Ideally, I would love a scenario where a user would choose their relationship status (married, single etc), and then from there with a few further clicks access a wide range of articles that might be relevant to their particular situation.  However, the issue is that I cannot truly envisage how that might work efficiently. My question then is if any reader might be able to give any tips about how to structure this.  Or if there is any blog that might be doing anything similar, (not necessarily about relationships…) – perhaps you could point me in its direction!

ALSO!  Instead of just writing random posts on random subjects which have been occurring to me, I would like to approach the writing of these posts in a more systematic way.  Again, has anyone got any ideas?!  Or what might you find useful?  Please let me know, it would be greatly appreciated!
Many thanks, Tosin 😉