Scientists and leading psychology research suggest that it takes us around 21 days to break or form a new habit. Choose the best challenge for you (or create your own) and do it for 21 days and you’re going to see how the habit becomes part of your lifestyle day by day. Track your mood in a simple, quick and easy manner. Every day you can track your mood(mood tracker) 21 days challenge app will keep track of every chunk of your memory in a convenient and secure way… and it’s versatile too. It