Try using a tool like 'git cola' that allows you to selectively commit soecific lines, instead of just by file.

Start a project and attempt to maintain a clean history. Break up changes logically into separate commits. To the point where 90%+ don't need more than the subject to describe a change and the history can be read like a story.

Use 'gitk --all' to view the tree of changes. get comfortable with using feature branches, using interactive rebasing to clean up a messy history of changes, etc.

The CLI works great for most things but visual tools make it much easier to write a clean history and reason about the changes over time.