I am terrible when it comes to consistency for writing. My project is a retro spy novel set in the 60s, and I find that some times I just can't focus on it, for example, I have been writing normally every day, when suddenly I became interested in biker culture, started reading on it, watching videos of motorcycle clubs and gangs, Harley Davidson models, all unrelated stuff I can't even lie to myself saying I'm doing research for it. And the worst thing is, when the time comes to start writing, the plot and the ideas to continue are there, but I feel like I'm forcing myself and not enjoying it. So now, should I try to focus or just wait for my interest in unrelated things go away and come back to it then? Does anyone ever experience this sort of thing?