Most employees treat career as something that happens to them. Treating it like a business — with strategy, customer (employer), product (your output), financials (compensation), growth plan — produces dramatically different outcomes.
What 'running as a business' includes
Strategic direction (where you want to be in 5 years). Investment in capability development. Diverse 'revenue' (multiple income streams or strong primary career). Customer satisfaction (employer happy with output). Annual review of progress against plan.
Most ambitious professionals who shift to this mindset accelerate their careers measurably within 2-3 years.