Create first a good habit, next push on to create a good lifestyle. I do not know how accurate 21 days and 90 days are in terms of creating a habit and lifestyle respectively. But I do agre. (Nice Try Health Fitness)
Self portrait ideas Mapping 2013 on Behance Use a process like this for "identity/self-concept" activity about skin color/shade/tone/palette. Put vertical photo strip of every child together on a couple images to make a collective face.