I am new to this site, as of today. I am looking for support

Hi everyone. A friend of mine recommended this site today, so I want to say hello, we can't do this on our own, can we? We need support. Not sure where to start, but I am 51, and don't really look it. However, my body looks a lot older, and I am a bit low because I have a knee injury - nothing serious or permanent, but I am having to rest it, therefore am housebound.
The one thing I hate about being fat are peopels' assumptions about weight. I am always busy (therefore being housebound is driving me mad), I am in the middle of a second Degree course (therefore not stupid), and I eat more healthily than my thinner counterparts. I do believe my weight has held me back in my career as a teacher, but I take great consolation in the fact that I am married to a man who loves me for who I am, as I am. He is supportive of my endeavor to lose weight, because I want to do it.