I love your profile picture - you are a very beautiful young woman and you smile exudes confidence!
I'm also just starting my weight loss journey. It does feel overwhelming to begin a weight loss program, especially when you feel as if you have 'so far' to go. I just want to be around 200 - but that's about 120 lbs away! So I am trying to do mini-goals that aren't so overwhelming. Right now, may goal isn't even weight loss oriented -- my goal is to walk everyday. Once I've done that for four weeks straight and really established a new routine in my life, then I will set my first weight loss goal of getting under 300 lbs. I don't know if such a strategy would work for you, but it makes the whole process seem less overwhelming to me. In just a couple of weeks, I can already tell I am getting stronger and walking further, faster.
This is a good board for just lurking and finding inspiration, but I hope you also keep us posted throughout your journey. Take care!