Planning without planning

I have found myself, once again, worrying about things I probably don't need to worry about. I am excited, relieved, eager, curious... and worried about my year (sort of) off in 2013. In the past when I've had time off, without paid work, I've fallen into depression so I know this is a tendency of mine. I'm hoping that since this is a voluntary work break and I am aware of this potential, it will not happen; however, I cannot sleep well at night on hope alone. So I am trying to plan without really planning. I want to have some ideas, pursuits that align with my values and goals, listed, ready for those times when my brain starts thinking 'I'm bored...', 'I haven't accomplished anything today...', 'What am I contributing to the household? I should earn more money, then I wouldn't feel this way.' I want to try to do this planning without over-planning, though, because part of the reason for taking leave is to experience a less structured daily life that's made up of more variety than teaching does. I want to have time, as well as the presence of mind, to do yoga or go for a hike or mop the floor instead of whinging to myself about what my husband might be thinking (but probably isn't) about my year off.
On another, slightly related, note: last night I had 'mop the floor' on my to do list and thought to myself after dinner, 'I could mop the floor'. (I might have been reminding myself all day about the 'could not should' thing, particularly in the context of that chore.) Well, I then noticed that the couch could do with a clean so I went to find the leather cleaner, but was unsuccessful (and was almost knocked over by a box falling on my head in the process). I took the hint and mopped the floor. I didn't feel as resentful mopping it knowing that it was a choice, rather than something I was making myself do. It's all a little silly, I know, these mind games I play with myself.