The aim of this thesis is to explore how designers can create well-being for all through product or service design. Well-being for all can be achieved through designing with the focus on Consumer Wisdom. Consumer Wisdom is defined as the pursuit of well-being for oneself and for others through mindful management of consumption-related choices and behaviours. The theory gives insights on providing consumers with products or services that enrich life with well-being for all (Luchs & Mick, 2018). The Consumer Wisdom theory was researched from a consumer perspective by Luchs and Mick (2018) and through a literature study the theory was transformed into a design strategy. Various design theories relate to wisdom, although they do not call it wisdom nor mention it. From these theories existing design directions were added to the 6 dimensions of the Consumer Wisdom theory to provide designers with the information to use the theory into practice. To cluster all the theories addressing wisdom into one tool is unique. Study 2 generated proposed design categories for the established design direction to gain insights on how to design for Consumer Wisdom. These 48 design categories were found through a categorisation task done by my supervision team and me with the use of 135 product and service examples. Merging all the information of study 1, 2 and research on existing design tools, developed three design tool concepts. The ideation was done through the use of a brainstorm session on the format of the tool and by using the ‘HOW-TO’ method. The best concept was chosen with the use of the Plus-Minus-Interesting matrix and the C-Box methods.Before evaluating the tool an iterated on the concept was done. A brainstorm session helped to evaluate the design tools visibility and feasibility. The evaluation showed that the provided examples were necessary to understand the theory. The design categories directed the focus on and helped to design easier for a certain design direction. The final tool is the Consumer Wisdom design tool consisting of a card set to design with. The set consists of: an informative card, dimensions cards, design category cards, design purpose cards and an instruction manual. The tool helps designers use and understand Consumer Wisdom in their design process. In the future the final tool should be tested with design students and design professional to validate its usability, feasibility and visibility.