Muddle, I think concentrating on finding the causal link to the problems is kind of hopeless and honestly overwhelming. Look for the causal link to what's going right and repeat it! I know it's an odd way approach it but that IS solution focused thinking. Watch in the next little while and document what is going right and what you did to get it there. Those may be the links that help in getting things on track. Think small and forget the big picture for now. Take care!