Having reviewed myriad papers and grants in the last 5 years, I can't recall a single instance of reading about enjoyment, delight, or desire. And yet, these are powerful forces in the engagement and adherence we need in order to initiate and sustain health behavior change, particularly in weight management. Self-monitoring is a strong predictor of weight loss success (1). Despite the establishment of a robust set of data supporting this across time and populations, engagement with diet and physical activity tracking tools declines over time in weight loss trials and real-world applications. While this is true of all modalities, new technologies have offered some modest improvements (2). Nevertheless, diet and activity apps, as well as wearables, have failed to become things that the average person can't live without. For most people, the enjoyment is short. These tools are a short-lived novelty, one that quickly becomes something we are “supposed” to check each day, instead of something we do by desire, and thus end up in a drawer (3). Delight remains overlooked and underappreciated in behavior change research. This contrasts starkly with the focus of our friends in the commercial world, who devote enormous resources to hiring and building top notch teams with this sole focus. These wizards of desire and delight are known as the user experience (or UX) team. It is their job to make using software enjoyable. This is not merely about making an app look pretty, though that also seems underappreciated in academic research. Thinking about how people want to engage with us is key to delivering a great user experience. Mobile application abandonment rates have been well documented (4). Yet we have not explored this in detail; the strategy necessary to continue to delight and engage patients may vary by population subgroup, but programs should consider not just use of mobile applications, but also web, email, interactive voice response, and text message, including the ability for participants to engage via multiple modalities and change modality. We also need to understand what people are looking for from our technology. Do they need an app to know that the 10,000 steps showing on their wearable today is more than the 9,000 it showed yesterday? Seems unlikely. Where academic interventions have excelled is in making that data actionable by providing meaningful insights, for example, by identifying that step counts are consistently lowest on Saturdays and working with the user to identify strategies to take more steps on Saturday. Academic interventions have been doing this long before technology made logging step counts easy. Where technology provides opportunity is providing those insights easily, in real time, in a way that the patient couldn't achieve on her own. There is delight in receiving a personalized text message, within 30 seconds of stepping on a connected scale, that provides new insights on behavior changes to support weight loss. Enjoyment matters. We all lead busy lives, so busy that movements are alive encouraging us to “stop glorifying busy.” Behavior change programs must fit into a patient's (or user's) life-flow the same way that health care technology must fit into physician workflow. But it also must delight the patient or user. We must face the reality that we are competing for time and attention in our user's lives. There are a small number of software applications (be they mobile apps or not) that we use each day, some because we have to and some because we want to. Health applications, including those for weight management, more often than not, are competing with the “want to” software for time and attention. We must acknowledge that our patients are like us—they'd rather look at pictures of Steve the Sloth on Instagram than be reminded that they are 500 calories from today's goal (which is really a limit) and it is only 12:30pm. Technology will continue to play a role in weight management, but for it to deliver on outcomes, it must pay attention to the user experience. In this regard, the commercial sector is leaps ahead of academic research. Rather than continuing to operate in parallel, there is enormous opportunity for collaboration. By respecting that each group does things well that the other could learn from, we create the opportunity to truly be transdisciplinary and shift the country's obesity trajectory.