Why do I do this to myself?

I'm going on a hike today with the AOC (Atlanta Outdoor Club) and as usual I'm nervous about it. I didn't sleep well and I had a dream about going on a hike, kind of like the dream you have where you go back to high school and can't remember your locker combination...this one I get to the meet up and I go to grab my daypack but all that is in it is my sleeping bag..so I leave it and go grab my poles and all I can find is my walking stick, which I figure will work...as I am walking it turns into a broom..that's just the parts that I can remember..

Now don't get me wrong..I love hiking..it's just that I worry so much that I won't be able to do it...that I'll be late getting to the meet up. (I've been there before but it's on the other side of town) or that I will slow everyone up or I will fall and won't be able to get up...I know it's dumb to worry about it but I just can't seem to stop.

I so want to get back into hiking but I have all these negative thoughts going through my mind:
You'll be the fattest person on the hike
You're too out of shape to hike
You're too old to hike
You'll wet yourself because your bladder can't wait anymore
You'll get leg cramps
You won't be able to climb the hills
You're going to make a fool out of yourself
You're going to fail (AGAIN)...

OK..I've got to conquer those fears and JUST DO IT... and if any of my fears are realized I will live with that too...but if I don't try then I will Fail myself...
More Later