3 Things to be Grateful for (45 seconds). It takes 21 days to create a new life habit. For 21 days in a row write down or say out loud three things that you are grateful for that are new and happened within the last 24 hours. Be specific - ( I am grateful that I live in a neighborhood where I can walk without driving to a suitable location to walk in peace.) We can do this with our spouse/team/or the group here. The increased happiness level is still high after 6 months.