don't get too upset about missing time to weather or brief illness. And don't try to make up for lost time by riding beyond your ability.
Keep your eye on the long view, stay committed to riding when you can, and you'll be fine.

I'm about to miss a week owing to travel. I don't like it - particularly because it's only the last week or so where I've felt some good progress emerging from my winter sluggishness - but it's unavoidable.