GTD outside of corporate headquarters

I haven't been posting here because I am finding it tough to use GTD when I don't need it at work. I know that the planning, organization and review pieces should be helpful no matter what I do. I just don't seem to want to plan things like how to improve the soil at home or design the yard into small grazing plots. I don't think I need a formal system for that, although I'd like to spend more time brainstorming those things. Maybe I just need to sit down and review everything I have in the current system and see what I need to add. Then I have to get myself to look at it every once and a while. That's been a stumbling block recently.