Most Important Task of the Day: How to Choose It

How to choose your most important task of the day

Written by Evaari Team · Updated: October 29, 2026
Reviewed by the Evaari editorial team (editorial review, not clinical review). This page is not medical advice.

To pick your most important task of the day, ask before opening email: 'If I only finish one thing today, what would make the biggest difference?' Write it down, then start it for just five minutes. Doing the main thing first protects it from being eaten by messages and meetings.

Why focus on one main task?

Most to-do lists treat every item as equal. Choosing one main task forces a decision about what actually matters today — so the day doesn't get spent on whatever arrives first.

Progress itself is motivating. In research analyzing nearly 12,000 diary entries from knowledge workers, making progress on meaningful work was the most common feature of people's best workdays — even small steps counted.

Writing it down helps too: experiments on plan-making found that a concrete plan for a goal reduces how much it intrudes on your thoughts.

Start tiny: easier → usual → step up

Easier	Usual	Step up
Choose your one main task	Start it for 5 minutes	Finish it before lunch

On a tired or busy day, do the easier version — it fully counts. When the usual version has felt easy for about two weeks, try a step up. If the bigger version starts slipping, step back down without guilt.

How to start in 3 steps

Pick your anchor. Right after your morning brain dump or coffee — before you open email.
Do only the tiny version for the first week: choose your one main task. That's a full win.
Mark it right away. Tick it off in Evaari or on a paper habit tracker. Seeing the tick is part of the reward.

Best time: morning. Usual version: about 5 min; tiny version: about 1 min.

What gets in the way (and what to do)

If everything feels urgent, pick the task that will matter most a week from now.
If the task is huge, choose the first concrete step as today's main task.
If meetings eat your day, block 30 minutes in the morning for the main task.
If you choose but don't start, commit to five minutes only, with a timer.

Which area of life does it support?

Choosing one main task belongs to the Work sphere. Evaari has it as a ready-made step (“One main task”) with all three versions built in. Each time you tick it off, your Evaari gets +10 light and your Work score grows a little, filling your Wheel of Life. See more work habits, or check your balance with the free Wheel of Life test.

What pairs well with it?

Before: a brain dump — the brain dump shows everything; you circle one.
After: focus sessions — start the main task as your first 25-minute focus session.

Want the full method? Read how to build a habit that sticks, or see how Evaari works.

Questions people ask

How do I decide on my most important task?

Ask which task, if done today, would make the most difference — to your goals, to others waiting on you, or to your stress level tomorrow. Usually it's the one you've been avoiding.

Should I do my most important task first thing in the morning?

If you can, yes — attention and energy are often higher early, and fewer interruptions have piled up. If your mornings are full of meetings, schedule a protected block for it instead.