Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
Everyday - Take a photo of yourself everyday.
Automagic Premium - Automagic Premium is the magic wand to automate your Android device.
Habit List - Create good habits and break bad ones with the app that keeps you focused.
AutomateIt - Automate Your Android!
Habitify - The easiest way to keep track of your habits