Net worth — total assets minus total liabilities — is the best single measure of overall financial health. Tracking it monthly reveals progress a monthly budget can miss.
One rough guideline: age × pretax annual income / 10. Wide variation is normal; the trend line matters more than any specific benchmark.
Yes — but recognise it's illiquid. Some people track two versions: total net worth and 'liquid' net worth (excluding home equity and cars).
Monthly or quarterly is enough. Weekly is usually noise; annually often misses inflection points.