You do what makes YOU happy girl!!!
I have in the past made a grand decree to everyone I know that I'm going to lose weight. Most people would say, good idea, or whatever (I'm a lot heavier than you are, so of course they would not say not to bother!), many would look at me and think, yeah, where have we heard that before!
I have decided that announcing my big plans has been a mistake for me in the past, because if I fail (which I have), I'm even more ashamed and feel people judging me, even if they aren't.
This time, I am telling the people closest to me so they are able to help me when I need it, but that's it. The rest of the people in my life can just be surprised!! That way, it's all about me and MY JOURNEY and not about what everyone's thinking as I do it. You can always come here for support and just let your friends be your friends!!
Best of luck!!!!