I absolutely know it's possible because I did it. I started in January of 2012 and now I can read and write almost anything, and my speech isn't bad either :)  

Learning Russian on your own is quite possible, of course, especially with the help of native speakers.

Hi. My name is Nataly. I'm from Ukraine so I'm a Russian and Ukrainian native speaker. I want to study French. I speak English quite well and Italian (level B2-C1). I can help you with your Russian (Ihave some books in pdf and I can send them to you and work with you). And you will help me with French. By the way, I'm not looking for love too because I have the best husband in the world and my child is so loved by us! If you want, write to me

Thanks for your answer Ivan

спасибо ксэня

спасибо ирэн