You can track your work on GitHub by creating milestones with associated issues and pull requests.

About milestones

You can use milestones to track progress on groups of issues or pull requests in a repository.

Creating and editing milestones for issues and pull requests

You can create a milestone to track progress on groups of issues or pull requests in a repository.

Associating milestones with issues and pull requests

You can associate similar issues and pull requests with a milestone to better track their progress.

Filtering issues and pull requests by milestone

Issues and pull requests can be filtered based on the milestone they're associated with. Once you've associated an issue or pull request with a milestone, you can find items based on their milestones. Within a milestone, you can prioritize issues and pull requests.

Viewing your milestone's progress

In order to track your milestones, you'll want to get a better understanding of how many open issues and pull requests are remaining.