Most side businesses don’t stall because the idea was bad. They stall on an ordinary Tuesday, when you get home tired, the kids need dinner, and the thought of opening your laptop feels impossible. Motivation was there on Sunday. By Tuesday it’s gone.
That’s not a character flaw. Motivation is a feeling, and feelings move around. If your business depends on feeling motivated, it will move around too. The more reliable approach is to make the work a habit, something you do because it’s what happens at that time, in that place, whether you feel like it or not.
What the Research Says About Forming Habits
One of the most cited studies on this comes from researchers at University College London. Phillippa Lally and colleagues asked volunteers to pick a daily eating, drinking or activity behavior and repeat it in the same context, then tracked how automatic it felt over 84 days. As the British Psychological Society’s summary of the study explains, it took an average of 66 days for the behavior to reach its peak automaticity, with individual times ranging from 18 days to an estimated 254 days.
Two findings matter for anyone building a business around a day job.
First, it takes a while, and the range is wide. The popular idea that a habit forms in 21 days doesn’t match this data. If week three still feels like effort, nothing is wrong.
Second, missing a single day didn’t meaningfully set people back. Many missed repetitions did add up and lowered how automatic the behavior became, but one bad night doesn’t erase your progress. What matters is getting back to it the next day.
Give the Habit a Specific Trigger
Another body of research points to a practical tool: implementation intentions, or “if-then” plans. Instead of a vague goal like “work on the business more,” you decide exactly when and where: “When I finish clearing the dinner table, I’ll sit at the kitchen counter and write for 20 minutes.”
A meta-analysis by Peter Gollwitzer and Paschal Sheeran, covering 94 independent tests, found that forming implementation intentions had a medium-to-large positive effect on reaching goals. The plan works because it hands the decision to a cue in your environment, so you don’t have to negotiate with yourself every evening.
A good trigger for side-business work is something that already happens every day without fail: your morning coffee, the kids’ bedtime, the moment you park the car after work.
Make the Action Small Enough to Survive Bad Days
The size of the habit matters as much as the trigger. If your rule is “two hours every night,” the first late shift or sick child breaks it. Choose a minimum that you could do on your worst realistic day:
- Write 150 words of a blog post or product page.
- Answer one subscriber email.
- Spend 15 minutes on one task from your list.
- Outline one section of the guide you’re building.
On good days you’ll often do more. On bad days, the minimum keeps the chain going and keeps the cue linked to the action. That’s the part you’re building.
Track Repetitions, Not Results
Early results in an online business are slow and lumpy. Most people earn little at first, and traffic and subscribers can take months to show up. If you only measure outcomes, you’ll feel like you’re failing during exactly the period when habits are forming.
So track what you control: did the session happen? A paper calendar with a mark for each day works. Seeing a month of marks is evidence that you’re the kind of person who shows up, and that evidence tends to outlast any burst of motivation.
Plan for the Nights It Goes Wrong
Some evenings the cue won’t happen at all. You work late, travel, or spend the night at urgent care with a feverish kid. Instead of treating those nights as failures, decide on a backup in advance. A backup plan is just a second if-then: “If I miss my evening session, I’ll do 10 minutes during lunch the next day.”
It also helps to reduce friction at the moment of the cue. Leave the laptop open on the right document, keep your notes where you’ll sit, and know what the next task is before you start. The less you have to decide when you’re tired, the more likely you are to begin. And beginning is usually the hardest part.
What Relentless Really Means
Relentless isn’t grinding until you collapse. It’s coming back, again and again, at a pace your life can sustain. Habits make that possible because they lower the cost of starting. You stop relying on how you feel and start relying on what you’ve set up.
Do This Today
Write one if-then sentence for your business: “When [something that already happens daily], I will [one small task] at [specific place].” Put it where you’ll see it at that moment, then do the first repetition tonight, even if it’s only 10 minutes.
Sources
- British Psychological Society Research Digest: How long does it take to form a habit?
- European Journal of Social Psychology: Lally et al. (2010), How are habits formed: Modelling habit formation in the real world
- Advances in Experimental Social Psychology: Gollwitzer & Sheeran (2006), Implementation intentions and goal achievement: A meta-analysis
