What goes wrong when you ignore that habit bundling?

The most common reason fails: Overloading a single bundle with too many new behaviors, creating a fragile chain where one missed link collapses the entire sequence.

The fix: List three habits you are currently trying to build or maintain that feel effortful. Next to each, list one existing habit you already perform reliably and one activity you genuinely enjoy. For each effortful habit, design one bundle: either stack it onto the existing habit using the formula "After I [current habit], I will [new habit]," or pair it with the enjoyable activity using the formula "I will only [enjoyable activity] while I [effortful habit]." Implement all three bundles this week and track initiation friction in your habit log.

The underlying principle is straightforward: Pair a habit you need to do with a habit you want to do.