I have been playing for 5+ years.In the first 3-4 years I though there was no way poker was a gambling game like many people say but with time passing I kind of changed my mind-yes,its not like roulette or other casino games but its still gambling.Whaterver you do,have other interests besides poker-and I suggest you have other income different that poker-when you burn out(it will happen often that you think) you would like to have some cash on the side.
I was just like you when I was younger-ambitious,motivated etc. so I was in that position.
Good luck