First of all, welcome back! It's a step in the right direction, and I commend you for taking it.
Secondly, I can totally identify with your situation. I also got that wake up call that happens when you turn 30. For some reason, every time I tried weight loss before this, I would do well for a while, then fall off the wagon and give up. This time, I truly believe that won't happen. For some reason, being 30 years old and making personal goals for myself (NOT resolutions!) seems to have made a difference. Almost like me telling myself that I'm mature enough to be realistic about it for the first time in my life. This isn't some pressure-filled resolution that I stick to until the year is over. This is forever. And I think the act of turning 30 changes what "forever" means...
Congratulations on conquering a fear and stepping up to visit the doctor. I know that personal anxieties can truly interfere with success, and I know that finding a way to face that fear and move past it can truly be a liberating experience. Be proud of yourself! Next time it will be easier, I'm sure of it!
Also, congrats on the no smoking!! I was also a cold turkey quitter. I determined that I would stop by the time I turned 30. I did that almost a year early... and by the time I turned 30 years old, I had been smoke free for 9 months! I'm currently at 615 days smoke free, and counting. You CAN do it! You ARE doing it! And I promise it gets easier. I'm able to be around smokers most of the time without it being a problem (I'm married to a smoker, even...). It's only a few times this past year that I found myself battling a real craving. I have never given in! Stay strong! It makes such a difference in your weight loss journey to have freed your body of this addiction!
Congratulations on taking your (hopefully) LAST first step, and remember that we're here to be your cheering section!