Here's the net worth calculation I do every January 1st, along with the exact spreadsheet structure I use.

Assets: checking account balance, HYSA balance, taxable brokerage value, 401k value, Roth IRA value, HSA value, home value (Zillow estimate, noted as approximate).

Liabilities: mortgage balance, any remaining car loan, any other debt.

Net worth: assets minus liabilities.

I also track: total invested assets (excluding home equity, which is illiquid), savings rate for the prior year (total savings divided by gross income), and a rolling 5-year chart of invested assets.

The home equity number is there for completeness but I don't celebrate it the same way. You can't eat your home equity and it doesn't compound the same way portfolio assets do. Liquid invested assets are the number I focus on for FIRE planning.