'Can I retire by 50?'

I see a lot of people asking you if they can retire early based on the assets they have. But I want to know how I can retire early. I'm 25 now and I contribute 10 percent of my income to my 401(k) each year and I maxed out on my Roth last year. I have about $10,000 saved so far. What more should I do so I can retire by age 50?

'Can I retire by 50?'
Source: CNN Money