and I found that it's too stressful to "focus" on product when, in my subconscious, I know there are many tax issues and accounting issues, housing issues, immigration issues etc. that cannot be neglected. It's also easy to neglect exercising, staying in touch with friends and loved ones, planning fun things ahead of time, only to burn out and lose even more productivity.

that's why one has to lift one's gaze; to get a more global perspective on what's on your plate. and then the ability to focus attention in a prioritized manner. a level of self-awareness helps.

good luck!