For a half year in 2001 I supported myself from trades off eTrade. Trouble was I had to pay attention 24/7, or I'd lose my stack of money. I saw a friend, a day trader, take a weekend off when his brother was in town, and he lost $11,000 USD over the weekend while the dang market was CLOSED! Eventually we both went back to 9-5 salaried gigs, and we're much happier, relaxed, nonstressed.