Table 1. Examples of mapping of barriers, strategies, and tactics.

Barriers	Strategiesa	Tacticsb
Decision fatigue: The mental exhaustion from making too many choices can lead to poor, suboptimal future decisions. For example, “As a working parent I have to deal with so many things that I don’t want to think about cooking when I get home.” [28]	Heuristics: Mental heuristics are cognitive shortcuts our brains use to simplify complex situations and make quick decisions [29].	Rules of thumb: Offer the user a set of actionable principles to help them automate tasks. For example, “Always, fill one third of your plate with lean protein.” Default: Encourage the user to pick an option and use it as a default to save time and mental effort. For example, “Let’s set Tuesday as a kale salad day.” [29]
Present bias: It is the user tendency to overvalue immediate rewards over future, larger rewards. For example, “It’s the weekend! Let’s start with dieting next week.” [30]	Future self. Future self is a vivid and emotional connection with a future version of ourselves that affects our intention to engage in a future behavior [31].	Mental rehearsal of successful performance: Encourage the user to practice visualizing themselves successfully performing the desired behavior in realistic scenarios. For example, suggest they vividly imagine eating greens and feeling light to continue with the day [15].

^aStrategy: a high-level behavioral science concept aimed to mitigate a barrier.

^bTactic: concrete, tangible, and actionable step to execute on a given strategy.