The Habit Tracker 21 plugin is designed to help users develop new habits by tracking their progress and providing a clear visualization of their commitment and consistency. With a simple setup process, you can create a folder for your habits and enable the habit tracker UI in your Obsidian notes. The plugin allows you to specify a path to a folder or specific habit, set the last displayed date, and choose how many dates to display in the chart. By using this plugin, you'll be able to see at a glance which habits you've formed and which ones need more attention.