Well I've voted for entrepreneurship because I think it's the best overall. However it depends on your areas of expertise and whee you are geographically. In the north of Ireland anyone, and I mean
anyone could have become a millionaire in the last four years in real estate. A house worth £50,000 would now go for £200,000 or $390,219.55. You need have only owned 10 properties to make a £1.5m or $2.9m, which was very easy as the banks were throwing their money at real estate investors. After tax, you would easily have a million clear. I only caught the tale-end of this wave but am still due a decent pay-off
. You have to keep your eyes peeled for upmarket trends.