What Am I Doing?

I'm killing myself.  Now, I'm not contemplating suicide and I'm not planning a suicide attempt.  But I am slowly killing myself.

I am an over weight, diabetic, heart patient who also has thyroid problems.  But what do I do daily? Nothing but eat and sit on my fat ass!  Well, I get up and go to the kitchen, bathroom, bedroom, etc.  But I don't eat right and I don't exercise and I'm slowly killing myself!

I have a doctors appointment tomorrow.  I think I'm depressed and I know I need to talk to her about this.  I'm too young to be doing this to myself.  I don't want to be this way but I am,  Can I make a change?  Can I start a new journey?  I'm just not sure.