I have the great privilege of having many career conversations with many people. A lot of them start with “I’m so busy, I’m struggling to keep my head above water.” Tell me if this sounds familiar …

I said yes to everything for about three weeks straight. Every ask, every meeting, every “can you just take a look at this,” yes, yes, yes. My calendar was full edge to edge. I told myself that was fine, because I was getting it all done. Then someone on my team needed twenty minutes I genuinely didn’t have, and something like panic went through me. Not “ugh, busy week” stress. Actual panic, over twenty minutes. Because there was nothing left to give. No slack anywhere in the system to absorb one thing I hadn’t already scheduled for.

If this sounds familiar, you are not alone. (That’s an amalgamation of several things people have said, not a specific quote.)

This is the part that matters, not the busy bit, the part that is not said … there was no plan with room in it for anything beyond staying afloat.

You have finite capacity

The idea isn’t complicated. You have a limited set of capacity, and if your plan uses all of it, you have no space left for learning, for growing, for real thinking. None left either for the ordinary unexpected stuff that shows up and disrupts a normal day.

So don’t plan to be full. Plan to run at somewhere around 70% of what you could theoretically cram in. I use 70/30 because it’s a split that’s worked for me. The number can move, depending on the season you’re in. What can’t move is that there has to be a number, and it can’t be 100.

Where the 30% goes

This isn’t slack for the sake of slack, you’re not boondoggling for a third of your time. It’s where the real work of a job happens. Thinking about a problem before you’re forced to. Noticing something start to drift before it’s a dumpster fire. Learning the thing that makes you better. And absorbing whatever shows up uninvited. The sick child. The random executive demand. The thing that always turns up whether you scheduled for it or not.

A calendar that’s already full has nowhere to put any of that. New things either get crammed in badly, or cause unplanned delays to already scheduled work.

Why it’s harder than it sounds

Knowing the rule and adhering to it are two very different skills. Planning for 70% means deciding, in advance, what you’re not going to do, before you’re triaging in a panic. It means scoping honestly, not the version of how long something takes that you’d like to be true. It means telling someone no, out loud, and sitting with them being a little disappointed in you. It means staying disciplined about what really matters instead of drifting toward whatever’s loudest that day. And it means telling the difference between being busy and being impactful. From the inside, those two feel identical. They are not the same thing.

None of that is a calendar skill. It’s closer to character. Saying no might be the hardest thing any of us do, because for the most part, we want to be the person that delivers, that responds, that saves the day. Especially when part of you is wired to be helpful and liked by everyone. I still find it hard, and I’ve been practicing it for years.

Draw the line

Saying no isn’t a feeling, it’s a decision. And a decision needs a method, or it doesn’t happen. Mine is priority.

Everything I could be doing gets ranked, and I draw a line at roughly 70% of my capacity. Above the line is what gets done. Below the line is what I’m not doing, this week, this quarter, whatever the horizon is.

That’s the whole trick, it sounds easy but it isn’t. What you’re saying no to isn’t “not important.” It’s lower priority than what’s above the line, sometimes lower urgency too. Naming it that way changes the conversation. “This isn’t important” invites an argument. “This is priority four behind three things I’ve already committed to” is just math. And math is easier to defend, and if it’s challenged then cool, let’s debate the ordering, but the line remains. Something comes above the line, something drops below.

The business doesn’t respond to pleasure

I didn’t understand this for a long time. If you protect the line, something below it doesn’t get done. That’s not a failure of the system. That’s the system working.

Because the business, whatever you want to call the thing you work inside, doesn’t respond to pleasure, to things going fine. It responds to pain. A missed item. A dropped thread. A “why didn’t this happen” question. That’s what forces the actual conversation. Is this really the priority? Or do we need to invest more capacity to get it done? Nothing else starts that conversation.

If you run at 150%, and get everything done to your own physical and mental detriment, the business doesn’t reward that with a rethink. It says thank you, smiles, and goes about its day, quietly assuming that’s just what you’re now capable of. Next quarter it loads on more. Why wouldn’t it. You never showed anyone the cost.

The 30% you protect isn’t just for you. It’s what makes the gap visible enough for someone to notice and ask the right question.

The trap of busy

The reason the 30% gets eaten first, every time, is that busy feels like proof. Full calendar equals working hard, right? Working hard equals doing a good job, RIGHT? And if a Tuesday afternoon shows open, some part of you reads that as evidence you’re not pulling your weight. I still catch myself feeling a faint guilt about empty time. Like I should be filling it with something, anything, just to look the part.

But busy is never the goal. Impact is. And the version of me running at 100%, with nothing held in reserve, isn’t more impactful, I’m just more brittle, and closer to the edge than I’d ever admit out loud.

What I’ve changed

I don’t get this right every week, and frankly as you go up the food chain, there’s an inherent expectation to just get it all done. I still over-commit, still fill the margin without noticing. I still look up some Thursdays and realize I’ve done the exact thing again this week. But I catch it faster than I used to, I notice when I’m at capacity, I treat that as the signal to say no to the next ask. Not as a badge to keep wearing.

If your week is full, genuinely full, margin to margin, that’s not a compliment to how hard you’re working, it’s a warning sign. The next unexpected disruption is coming, and it’s going to land on you with nowhere left to go.

Be Awesome. And Nice.

Adam