Revenue, a review, and a portfolio photo. If it cannot produce all three, reconsider.
Every job must produce three outputs: revenue that covers your actual costs plus margin, a Google review from the client, and before/after portfolio photos. A job that only produces cash builds nothing.
The right jobs are completable in one to two days, produce visible transformations, serve clients likely to leave reviews, and pay your actual rates. The wrong jobs are favors, discounted work, or projects for clients who will never review.