if you want millions, pick a job that pays well in a large company and work your arse off 60-70 h/wk. seriously. good lawyers, accountants, finance etc, lots/most of them will end up with net worths >1M by the time they're in their 40's-50's. if you want to work on interesting things, money may well be a logical outcome but it's probably not your primary incentive. advice is worth what you pay for it but if you're entrepreneurial because you think it's the fast lane to cash, you might want to analyse your reasoning.