Great questions. For me: 1. There's a few weeks every summer where planning is a major focus, but then evaluating and adapting that plan might take up to half

Great questions. For me: 1. There's a few weeks every summer where planning is a major focus, but then evaluating and adapting that plan might take up to half a day a week on average throughout the year. Basically: What assumptions underlie the plan, and have those assumptions changed? Maybe we assumed wrong, or maybe facts changed. So I try to keep an eye out for things that require an adjustment in our direction. 2. I have 10 year goals, 3-5 year milestones, and 1 year plans. I'd like to push that to 18 month plans, but at the moment I only go into any detail for 12 months. 3. Once per year in terms of formally planning the subsequent year. 4. I can't think of a time where I completely abandoned a plan (as opposed to adapting it to changing data). 5. Interesting question. I would argue "never", because if there's a truly more profitable option on the table, then the plan needs to adapt and take that into account. But are we talking about short-term or long-term profitable? I very rarely change my plans in response to short-term opportunities, because that's a great way of killing long-term profitability.