It feels so good to hurt so bad

I started P90x workout program with my wife on Monday and I'm very sore. I've got the gift of high metabolism so to the naked eye I appear to be in good shape. This is ABSOLUTELY INCORRECT. For the last 5 years I've sat at a desk for 8 hours a day and the majority of my exercise is walking around a pool table. Not exactly what the P90x gurus would call "high intensity". Last year we played softball which at least forced me to run, I honestly can't remember the last time I ran as fast I could before softball. My wife has been working out for quite sometime and is in very good shape so working out with her is helpful in the sense that I have someone to push me. But my DNA consists of having to be the best or quickest or strongest or, well you get the picture. So when I can't finish whatever devil exercise they're doing and my petite wife is having little problems I get PISSSSEDD OFF. Obviously not at her, I'm very proud of her workout and diet regimen that she is doing. I understand that I've only been working out for 2 days now and it takes time and blah, blah, blah. I've always been at least "good" if not better than good at pretty much everything I've ever done so when I start a new hobby and I'm not good at it, it's a pretty tough pill for me to swallow. The one thing that I've been able to stick with that I suck at is golf. I first played golf about 10 years ago and started playing somewhat regularly about 6 years ago. I've spent many a dollar, day, and golf ball on a game I'm still very, very bad at. It is just baffling to me, how I can play something so much, derive so much enjoyment out of, and still be just as bad as I was when I started. It is quite a humbling experience to go out and shoot a 110 after all the my years of playing. I've got pool league tonight after I workout and I'm hoping I'll be able to lift my arms that high. I put my seatbelt on yesterday and I thought my chest and arms were going to explode from reaching up and across my body. I'm excited to be getting back in shape and hope that I can get past the first couple weeks of being ridiculously sore and stay with it.